# Setup and shell utility functions for use in hotplug agents.
# vim: syntax=sh
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation version 2 of the License.

if [ "$UDEV_LOG" ] && [ "$UDEV_LOG" -ge 7 ]; then
DEBUG=yes
fi

PATH='/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin'

[ -e /etc/default/hotplug ] && . /etc/default/hotplug


if [ -x /usr/bin/logger ]; then
LOGGER=/usr/bin/logger
elif [ -x /bin/logger ]; then
LOGGER=/bin/logger
else
unset LOGGER
fi

# for diagnostics
if [ -t 1 -a -z "$LOGGER" ] || [ ! -e '/dev/log' ]; then
mesg() {
echo "$@" >&2
}
elif [ -t 1 ]; then
mesg() {
echo "$@"
$LOGGER -t "${0##*/}[$$]" "$@"
}
else
mesg() {
$LOGGER -t "${0##*/}[$$]" "$@"
}
fi

debug_mesg() {
[ -z "$DEBUG" -o "$DEBUG" = no ] && return 0
mesg "$@"
}

wait_for_file() {
local file=$1
local timeout=$2
[ "$timeout" ] || timeout=120

local count=$timeout
while [ $count != 0 ]; do
[ -e "$file" ] && return 0
sleep 1
count=$(($count - 1))
done

mesg "$file did not appear before the timeout!"
exit 1
}