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astribank_hook: startup lock and more

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* Silently exit right away if user did not set XPP_HOTPLUG_DAHDI.
* Only one Astribank should be allowed to run the startup script:
  - Protect that section with a "lock" (symlinking a file).
  - Sadly we can't rely on /run and may have to wait for a r/w file-system.
  - And thus even this waiting needs to be run in the background
    as to not hold udev.

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>

git-svn-id: http://svn.astersk.org/svn/dahdi/tools/trunk@10068 17933a7a-c749-41c5-a318-cba88f637d49
This commit is contained in:
Tzafrir Cohen 2011-07-21 13:40:18 +00:00
parent caa8c947b7
commit f2152481e9
1 changed files with 35 additions and 13 deletions
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48
xpp/astribank_hook
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@ -27,6 +27,10 @@ else
dahdi_conf="/etc/dahdi"
fi
if [ "$XPP_HOTPLUG_DAHDI" != yes ]; then
exit 0
fi
export XPPORDER_CONF="$dahdi_conf/xpp_order"
if [ ! -r "$XPPORDER_CONF" ]; then
(
@ -62,26 +66,24 @@ matched_devices() {
NUM_WANTED=`clean_lines | sed '/^$/d' | wc -l`
NUM_GOOD=`matched_devices | wc -l`
LOCK="/var/lock/twinstar_startup"
start_dahdi() {
script=/etc/init.d/dahdi
if [ "$XPP_HOTPLUG_DAHDI" = yes ]; then
echo "Starting $script."
"$script" start | logger -i -t "$script"
status=$?
echo "Status($script): $status"
else
echo "$0: Skip($script): No XPP_HOTPLUG_DAHDI=yes in /etc/dahdi/init.conf"
exit 0
fi
echo "Starting $script."
"$script" start | logger -i -t "$script"
status=$?
echo "Status($script): $status"
if [ -x "$dir/twinstar_hook" ]; then
"$dir/twinstar_hook"
fi
# Finished astribanks
echo "Removing semaphore"
astribank_is_starting -v -r
rm -f "$LOCK"
}
#echo "$0: $ACTION($XBUS_NAME)" | $LOGGER
case "$ACTION" in
add)
;;
@ -90,9 +92,28 @@ remove)
online)
echo "$ACTION($XBUS_NAME): $NUM_GOOD/$NUM_WANTED from $XPPORDER_CONF" | $LOGGER
if [ "$NUM_GOOD" -eq "$NUM_WANTED" ]; then
echo "START-DAHDI: Total $NUM_GOOD online." | $LOGGER
# Fork services
start_dahdi < /dev/null 2>&1 | $LOGGER &
(
# Delay the initialization of the Astribank until the filesystem
# is mounted read-write:
test_file="/var/lock/astribank_test_file"
for i in `seq 1 20`; do
if touch $test_file 2> /dev/null; then
rm -f $test_file
break
else
echo "$0: [$i] - Failed writing '$test_file'...waiting" | $LOGGER
sleep 1;
fi
done
if ln -s "$XBUS_NAME" "$LOCK"; then
echo "START-DAHDI: Total $NUM_GOOD online." | $LOGGER
# Fork services
start_dahdi < /dev/null 2>&1 | $LOGGER
else
echo "$0: Was started: $(ls -l $LOCK)" | $LOGGER
fi
) < /dev/null 2>&1 | $LOGGER &
fi
;;
offline)
@ -100,8 +121,9 @@ offline)
if [ "$NUM_GOOD" -eq 0 ]; then
echo "All Astribanks offline" | $LOGGER
if [ -x "$dir/twinstar_hook" ]; then
"$dir/twinstar_hook"
"$dir/twinstar_hook" || :
fi
rm -f "$LOCK"
fi
;;
*)