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|
#!/sbin/runscript
description="Load USBIP kernel modules and run daemon"
: ${USBIP_EXEC:=$(which usbip)}
: ${USBIP_EXEC_DAEMON:=$(which usbipd)}
depend()
{
provide usbip
need sysfs net
}
LoadKernelModule ()
{
local module=$1
#-----------------
result=
if [ -z "$(/sbin/lsmod | grep "^$(basename $module)")" ]
then
local filename=$(/sbin/modprobe -l $module)
if [ -n "$filename" ]
then
if ! /sbin/modprobe $filename
then
eerror "Cannot load kernel module '$filename'."
result=failed
fi
else
eerror "Cannot find kernel module '$module'."
result=failed
fi
fi
[ -z "$result" ]
}
IsAvailable ()
{
local bus_or_device=$(echo $1 | tr '[A-Z]' '[a-z]')
local host=$2
#-----------------
host=${host:+--remote=$host}
: ${host:=--local}
$USBIP_EXEC list --parsable $host |
sed -n 's|.*busid='$bus_or_device'#.*|yes|p; \
s|.*usbid='$bus_or_device'#.*|yes|p'
}
GetBus ()
{
local device=$(echo $1 | tr '[A-Z]' '[a-z]')
local host=$2
#-----------------
host=${host:+--remote=$host}
: ${host:=--local}
case "$host" in
"--remote"*) # FIXME: USBIP bug causing remote devices not to be listed parsable
$USBIP_EXEC list --parsable $host |
sed -n 's|^[ \t]*\([0-9][0-9]*-[0-9][0-9]*\):.*('"$device"').*|\1|p';;
*)
$USBIP_EXEC list --parsable $host |
sed -n 's|.*busid=\([0-9][0-9]*-[0-9][0-9]*\)#usbid='"$device"'#.*|\1|p';;
esac
}
ExecuteUsbip()
{
local command=$1
local bus=$2
local host=$3
local port=$4
#-----------------
local result=
if [ -n "$command" ]
then
if $USBIP_EXEC $command ${bus:+--busid=$bus} ${host:+--remote=$host} ${port:+--port $port} 1> /dev/null 2> /dev/null
then
einfo "Executed command '$command'${bus:+ with bus '$bus'}${host:+ on host '$host'}${port:+ on port '$port'}, successfully."
else
ewarn "Executing command '$command'${bus:+ with bus '$bus'}${host:+ on host '$host'}${port:+ on port '$port'} failed."
result=failed
fi
fi
[ -z "$result" ]
}
ValidateCommand ()
{
local command=$1
local bus_or_device=$2
local host=$3
#-----------------
local result=
local bus=
if [ -z "$host" -o -n "$(echo $host | grep '^[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*$')" ]
then
if [ -n "$(echo $bus_or_device | grep '^[[:xdigit:]]\{4\}:[[:xdigit:]]\{4\}$')" ]
then
bus="$(GetBus $bus_or_device $host)"
if [ -z "$bus" ]
then
ewarn "Device '$bus_or_device' not available${host:+ on host '$host'}."
result=failed
fi
else
if [ -n "$(echo $bus_or_device | grep '^[0-9][0-9]*-[0-9][0-9]*$')" ]
then
bus=$bus_or_device
else
ewarn "Unrecognized bus or device '$bus_or_device'."
result=failed
fi
fi
if [ -n "$bus" ]
then
case "$command" in
"bind"|"unbind")
ExecuteUsbip $command $bus || result=failed;;
"attach")
if [ -n "$host" ]
then
ExecuteUsbip $command $bus $host || result=failed
else
ewarn "Host statement is missing in command '$command'."
result=failed
fi
;;
*)
ewarn "Unhandled command '$command'."; result=failed;;
esac
fi
else
ewarn "Illegal host ip address '$host'."
result=failed
fi
[ -z "$result" ]
}
ProcessList ()
{
local command=$1
shift
local list=$*
#-----------------
local result=
local no_host=
case "$command" in
"bind"|"unbind") no_host=yes;;
*) no_host=;;
esac
local host=
local item=
( for item in $list
do
if [ -n "$host" -o -n "$no_host" ]
then
ValidateCommand $command $item $host || result=failed
host=
else
host=$item
fi
done
[ -z "$result" ] )
}
DetachAll ()
{
# FIXME: At this stage, there is no way to get the vhci_hcd port id of any attached device
for port in $(seq 0 15)
do
$USBIP_EXEC detach --port $port 2> /dev/null
done
[ 1 -eq 1 ]
}
UnbindAll ()
{
local result=
ProcessList unbind "$($USBIP_EXEC list --parsable --local | sed -n 's|^busid=\([0-9][0-9]*-[0-9][0-9]*\)#.*=usbip-host#$|\1|p' | tr '\n' ' ')"
}
start_daemon()
{
ebegin "Starting usbip daemon"
if LoadKernelModule usbip-host
then
start-stop-daemon --start --exec $USBIP_EXEC_DAEMON -- -D
fi
eend $?
}
start()
{
ebegin "Starting usbip"
if LoadKernelModule usbip-core
then
if LoadKernelModule vhci-hcd
then
eend 0
if yesno "${USBIP_START_DAEMON:-no}"
then
start_daemon
fi
if [ -n "$USBIP_AUTO_BIND" ]
then
ebegin "Auto-binding local busses"
ProcessList bind $USBIP_AUTO_BIND
eend $?
fi
if [ -n "$USBIP_AUTO_ATTACH" ]
then
ebegin "Auto-attaching remote busses"
ProcessList attach $USBIP_AUTO_ATTACH
eend $?
fi
else
eend 1
fi
else
eend 1
fi
}
stop_daemon()
{
ebegin "Stopping usbip daemon"
start-stop-daemon --stop --exec $USBIP_EXEC_DAEMON
eend $?
}
stop()
{
ebegin "Detaching remote busses"
DetachAll
eend $?
ebegin "Un-binding local busses"
UnbindAll
eend $?
if [ -n "$(pidof $(basename "$USBIP_EXEC_DAEMON"))" ]
then
stop_daemon
fi
}
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