/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/ is in dahdi-dkms 1:2.10.2~dfsg-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/Changelog_xpp
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/Kbuild
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/Kconfig
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/Makefile
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/XppConfig.pm
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/card_bri.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/card_bri.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/card_echo.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/card_echo.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/card_fxo.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/card_fxo.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/card_fxs.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/card_fxs.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/card_global.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/card_global.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/card_pri.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/card_pri.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/dahdi_debug.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/dahdi_debug.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/firmwares/
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/firmwares/LICENSE.firmware
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/firmwares/Makefile
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/firmwares/README
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/init_card_1_30
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/init_card_2_30
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/init_card_3_30
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/init_card_4_30
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/init_card_5_30
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/mmapbus.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/mmapbus.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/mmapdrv.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/param_doc
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/parport_debug.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/parport_debug.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/print_fxo_modes.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xbus-core.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xbus-core.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xbus-pcm.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xbus-pcm.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xbus-sysfs.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xdefs.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xframe_queue.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xframe_queue.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xpd.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xpp.conf
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xpp_dahdi.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xpp_dahdi.h
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xpp_debug
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xpp_usb.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xproto.c
/usr/src/dahdi-2.10.2~dfsg-1ubuntu1/drivers/dahdi/xpp/xproto.h