58 lines
2.0 KiB
Plaintext
58 lines
2.0 KiB
Plaintext
# in a lxc container, events for network interfaces do not
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# get created or may be missed. This helps cloud-init-nonet along
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# by emitting those events if they have not been emitted.
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start on container
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stop on static-network-up
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task
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emits net-device-added
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console output
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script
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# if we are inside a container, then we may have to emit the ifup
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# events for 'auto' network devices.
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set -f
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# from /etc/network/if-up.d/upstart
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MARK_DEV_PREFIX="/run/network/ifup."
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MARK_STATIC_NETWORK_EMITTED="/run/network/static-network-up-emitted"
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# if the all static network interfaces are already up, nothing to do
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[ -f "$MARK_STATIC_NETWORK_EMITTED" ] && exit 0
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# ifquery will exit failure if there is no /run/network directory.
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# normally that would get created by one of network-interface.conf
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# or networking.conf. But, it is possible that we're running
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# before either of those have.
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mkdir -p /run/network
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# get list of all 'auto' interfaces. if there are none, nothing to do.
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auto_list=$(ifquery --list --allow auto 2>/dev/null) || :
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[ -z "$auto_list" ] && exit 0
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set -- ${auto_list}
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[ "$*" = "lo" ] && exit 0
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# we only want to emit for interfaces that do not exist, so filter
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# out anything that does not exist.
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for iface in "$@"; do
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[ "$iface" = "lo" ] && continue
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# skip interfaces that are already up
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[ -f "${MARK_DEV_PREFIX}${iface}" ] && continue
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if [ -d /sys/net ]; then
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# if /sys is mounted, and there is no /sys/net/iface, then no device
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[ -e "/sys/net/$iface" ] && continue
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else
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# sys wasn't mounted, so just check via 'ifconfig'
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ifconfig "$iface" >/dev/null 2>&1 || continue
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fi
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initctl emit --no-wait net-device-added "INTERFACE=$iface" &&
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emitted="$emitted $iface" ||
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echo "warn: ${UPSTART_JOB} failed to emit net-device-added INTERFACE=$iface"
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done
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[ -z "${emitted# }" ] ||
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echo "${UPSTART_JOB}: emitted ifup for ${emitted# }"
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end script
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