dahdi-tools/hotplug/dahdi_span_config

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#! /bin/sh
#
# /usr/share/dahdi/dahdi_span_config
#
# Called by UDEV when a dahdi span is added/removed
#
me=`basename $0`
dir=`dirname $0`
LOGGER="logger -i -t '$me'"
NAME=`basename "$DEVPATH" | tr -c 'A-Za-z0-9-' '_'`
exec 2> /dev/null
# Always redirect stderr somewhere, otherwise the shell script will die
# when it tries to do I/O related stuff on closed file descriptor.
# Our default is to throw it down the bit-bucket.
#exec 2> /dev/console
## If you wish to trace this script:
#exec 2> "/tmp/${me}.$NAME" 1>&2
# Our directory in the beginning, so we can use local lab setup
PATH="$dir:/usr/sbin:/sbin:/usr/bin:/bin"
export PATH
set -e
#echo >&2 "$0($ACTION): DEBUG($# args): '$*'"
# Do we have a configuration?
if [ -f /etc/dahdi/init.conf ]; then
. /etc/dahdi/init.conf
fi
if [ "$DAHDI_UDEV_DISABLE_SPANS" = 'yes' ]; then
echo "DAHDI_UDEV_DISABLE_SPANS=yes. Skip $DEVPATH" | $LOGGER
exit 0
fi
# Can we pass a different value so we can use
# alternate (testing) configuration?
# Meanwhile, make it hard-coded.
DAHDICONFDIR='/etc/dahdi'
export DAHDICONFDIR
run_parts() {
# Have our internal "run-parts" (adapted from Fedora),
# as implementations differ
for i in `LC_ALL=C; ls -d $dir/span_config.d/*[!~,] 2>/dev/null` ; do
[ -d "$i" ] && continue
[ ! -x "$i" ] && continue
# Don't run *.{rpmsave,rpmorig,rpmnew,swp,cfsaved} files
case "$i" in
*.cfsaved|*.rpmsave|*.rpmorig|*.rpmnew|*.swp|*,v)
continue
;;
esac
#echo "D: Running '$i'"
"$i"
done
}
case "$ACTION" in
add)
echo "$ACTION: $DEVPATH" | $LOGGER
# Set variables
span_devpath="/sys$DEVPATH"
SPANNO=`echo "$span_devpath" | sed 's,.*/span-,,'`
BASECHAN=`cat "$span_devpath/basechan"`
CHANNELS=`cat "$span_devpath/channels"`
ENDCHAN=`expr "$BASECHAN" + "$CHANNELS" - 1`
export SPANNO BASECHAN CHANNELS ENDCHAN
# Background run -- don't block udev
run_parts 2>&1 < /dev/null | $LOGGER &
;;
remove|online|offline)
# Nothing to do yet...
echo "$ACTION: $DEVPATH" | $LOGGER
;;
*)
echo "UNHANDLED: $ACTION: $DEVPATH" | $LOGGER
;;
esac