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# -*- sh -*-
# vim:ft=sh:ts=8:sw=4:noet
AddConfigHandler DevicesOptions
AddConfigHelp "IncompatibleDevices <device name> [...]" "If there are any processes accessing these devices, then suspending is aborted. If the --kill option is passed, the offending processes are terminated and the suspend continues. For example programs accessing the sound card (/dev/dsp*) or tuner cards (/dev/video*) would deny the respective modules from being unloaded."
DevicesFree() {
local needsleep # always! ;)
local device
local ret
[ -z "$INCOMPATIBLE_DEVICES" ] && return 0
needsleep=0
# Send TERM to processes first
if [ x"$KILL_PROGRAMS" = "x1" ] ; then
for device in $INCOMPATIBLE_DEVICES ; do
if fuser -s $device ; then
vecho 1 "Sending SIGTERM to processes using $device..."
fuser -s -k -15 $device 2>/dev/null
fuser -s $device && needsleep=1
fi
done
fi
[ "$needsleep" -eq 1 ] && sleep 1
# Send KILL to processes
ret=0
for device in $INCOMPATIBLE_DEVICES ; do
if fuser -s $device ; then
if [ x"$KILL_PROGRAMS" = "x1" ] ; then
vecho 1 "Sending SIGKILL to processes using $device..."
fuser -s -k -9 $device 2>/dev/null
else
vecho 1 "Device $device is still in use by the following processes: `fuser $device 2>/dev/null`"
ret=1
fi
fi
done
# We tried our best.
return $ret
}
DevicesOptions() {
case $1 in
incompatibledevices)
# we have to kill before are services stopped, modules unloaded.
# but should it run before programs, I suggest yes!
[ -z "$INCOMPATIBLE_DEVICES" ] && AddSuspendHook 19 DevicesFree
shift
INCOMPATIBLE_DEVICES="$INCOMPATIBLE_DEVICES $@"
;;
*)
return 1
esac
return 0
}
# $Id$
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