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authorRoy Marples <roy@marples.name>2008-03-26 14:18:01 +0000
committerRoy Marples <roy@marples.name>2008-03-26 14:18:01 +0000
commitccf238f852fd0463e68d33b91f0dd55000c325e3 (patch)
treee104640ae7b25be54520c22712b34385b1c030c4 /net/clip.sh
parent55858eca2ec678fce14b21df33d08f5aaac94bcf (diff)
Merge net.OS into net
Diffstat (limited to 'net/clip.sh')
-rw-r--r--net/clip.sh221
1 files changed, 221 insertions, 0 deletions
diff --git a/net/clip.sh b/net/clip.sh
new file mode 100644
index 00000000..78344d23
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+++ b/net/clip.sh
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+# Copyright 2005-2007 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+clip_depend()
+{
+ program /usr/sbin/atmsigd
+ before interface
+}
+
+_config_vars="$_config_vars clip"
+
+# This starts a service. Albeit atmsigd, ilmid and atmarpd do allow for back-
+# grounding through the -b option, its usage causes them to be sensible to
+# SIGHUP, which is sent to all daemons when console detaches right after
+# startup. This is probably due to the fact that these programs don't detach
+# themself from the controlling terminal when backgrounding... The only way I
+# see to overcame this is to use the --background option in start-stop-daemon,
+# which is reported as a "last resort" method, but it acts correctly about this.
+atmclip_svc_start()
+{
+ ebegin "Starting $2 Daemon ($1)"
+ start-stop-daemon --start \
+ --background \
+ --make-pidfile --pidfile "/var/run/$1.pid" \
+ --exec "/usr/sbin/$1" -- -l syslog
+ eend $?
+}
+
+atmclip_svcs_start()
+{
+ einfo "First CLIP instance: starting ATM CLIP daemons"
+ eindent
+
+ if yesno ${clip_full:-yes}; then
+ atmclip_svc_start atmsigd "Signaling" && \
+ atmclip_svc_start ilmid "Integrated Local Management Interface" && \
+ atmclip_svc_start atmarpd "Address Resolution Protocol"
+ else
+ atmclip_svc_start atmarpd "Address Resolution Protocol"
+ fi
+
+ local r=$?
+
+ eoutdent
+ return ${r}
+}
+
+atmclip_svc_stop()
+{
+ ebegin "Stopping $2 Daemon ($1)"
+ start-stop-daemon --stop --quiet \
+ --pidfile "/var/run/$1.pid" \
+ --exec "/usr/sbin/$1"
+ eend $?
+}
+
+atmclip_svcs_stop()
+{
+ einfo "Last CLIP instance: stopping ATM CLIP daemons"
+ eindent
+
+ # Heartake operation!
+ sync
+
+ atmclip_svc_stop atmarpd "Address Resolution Protocol"
+ if yesno ${clip_full:-yes}; then
+ atmclip_svc_stop ilmid "Integrated Local Management Interface"
+ atmclip_svc_stop atmsigd "Signaling"
+ fi
+
+ eoutdent
+}
+
+are_atmclip_svcs_running()
+{
+
+ start-stop-daemon --quiet --test --stop --pidfile /var/run/atmarpd.pid || return 1
+
+ if yesno ${clip_full:-yes}; then
+ start-stop-daemon --quiet --test --stop --pidfile /var/run/ilmid.pid || return 1
+ start-stop-daemon --quiet --test --stop --pidfile /var/run/atmsigd.pid || return 1
+ fi
+
+ return 0
+}
+
+clip_pre_start()
+{
+ local clip=
+ eval clip=\$clip_${IFVAR}
+ [ -z "${clip}" ] && return 0
+
+ if [ ! -r /proc/net/atm/arp ]; then
+ modprobe clip && sleep 2
+ if [ ! -r /proc/net/atm/arp ]; then
+ eerror "You need first to enable kernel support for ATM CLIP"
+ return 1
+ fi
+ fi
+
+ local started_here=
+ if ! are_atmclip_svcs_running; then
+ atmclip_svcs_start || return 1
+ started_here=1
+ fi
+
+ if ! _exists; then
+ ebegin "Creating CLIP interface ${IFACE}"
+ atmarp -c "${IFACE}"
+ if ! eend $?; then
+ [ -z "${started_here}" ] && atmclip_svcs_stop
+ return 1
+ fi
+ fi
+
+ return 0
+}
+
+clip_post_start()
+{
+ local clip="$(_get_array "clip_${IFVAR}")"
+ [ -z "${clip}" ] && return 0
+
+ are_atmclip_svcs_running || return 1
+
+ # The atm tools (atmarpd?) are silly enough that they would not work with
+ # iproute2 interface setup as opposed to the ifconfig one.
+ # The workaround is to temporarily toggle the interface state from up
+ # to down and then up again, without touching its address. This (should)
+ # work with both iproute2 and ifconfig.
+ _down
+ _up
+
+ # Now the real thing: create a PVC with our peer(s).
+ # There are cases in which the ATM interface is not yet
+ # ready to establish new VCCs. In that cases, atmarp would
+ # fail. Here we allow 10 retries to happen every 2 seconds before
+ # reporting problems. Also, when no defined VC can be established,
+ # we stop the ATM daemons.
+ local has_failures= i=
+ for i in ${clip}; do
+ local IFS=","
+ set -- ${i}
+ unset IFS
+ local peerip="$1"; shift
+ local ifvpivci="$1"; shift
+ ebegin "Creating PVC ${ifvpivci} for peer ${peerip}"
+
+ local nleftretries=10 emsg= ecode=
+ while [ ${nleftretries} -gt 0 ]; do
+ nleftretries=$((${nleftretries} - 1))
+ emsg="$(atmarp -s "${peerip}" "${ifvpivci}" "$@" 2>&1)"
+ ecode=$? && break
+ sleep 2
+ done
+
+ if ! eend ${ecode}; then
+ eerror "Creation failed for PVC ${ifvpivci}: ${emsg}"
+ has_failures=1
+ fi
+ done
+
+ if [ -n "${has_failures}" ]; then
+ clip_pre_stop "${iface}"
+ clip_post_stop "${iface}"
+ return 1
+ else
+ return 0
+ fi
+}
+
+clip_pre_stop()
+{
+ are_atmclip_svcs_running || return 0
+
+ # We remove all the PVCs which may have been created by
+ # clip_post_start for this interface. This shouldn't be
+ # needed by the ATM stack, but sometimes I got a panic
+ # killing CLIP daemons without previously vacuuming
+ # every active CLIP PVCs.
+ # The linux 2.6's ATM stack is really a mess...
+ local itf= t= encp= idle= ipaddr= left=
+ einfo "Removing PVCs on this interface"
+ eindent
+ {
+ read left && \
+ while read itf t encp idle ipaddr left; do
+ if [ "${itf}" = "${IFACE}" ]; then
+ ebegin "Removing PVC to ${ipaddr}"
+ atmarp -d "${ipaddr}"
+ eend $?
+ fi
+ done
+ } < /proc/net/atm/arp
+ eoutdent
+}
+
+# Here we should teorically delete the interface previously created in the
+# clip_pre_start function, but there is no way to "undo" an interface creation.
+# We can just leave the interface down. "ifconfig -a" will still list it...
+# Also, here we can stop the ATM CLIP daemons if there is no other CLIP PVC
+# outstanding. We check this condition by inspecting the /proc/net/atm/arp file.
+clip_post_stop()
+{
+ are_atmclip_svcs_running || return 0
+
+ local itf= left= hasothers=
+ {
+ read left && \
+ while read itf left; do
+ if [ "${itf}" != "${IFACE}" ]; then
+ hasothers=1
+ break
+ fi
+ done
+ } < /proc/net/atm/arp
+
+ if [ -z "${hasothers}" ]; then
+ atmclip_svcs_stop || return 1
+ fi
+}