systemd/etc/udev/debian/udev.rules

# There are a number of modifiers that are allowed to be used in some
# of the different fields. They provide the following subsitutions:
#
# %n the "kernel number" of the device.
#    For example, 'sda3' has a "kernel number" of '3'
# %k the kernel name for the device
# %M the kernel major number for the device
# %m the kernel minor number for the device
# %b the bus id for the device
# %c the string returned by the PROGRAM
# %s{filename} the content of a sysfs attribute
# %% the '%' char itself
#

# workaround for devices which do not report media changes
SUBSYSTEMS=="ide", KERNEL=="hd[a-z]", ATTR{removable}=="1", \
	ENV{ID_MODEL}=="IOMEGA_ZIP*",	NAME="%k", OPTIONS+="all_partitions"
SUBSYSTEMS=="ide", KERNEL=="hd[a-z]", ATTRS{media}=="floppy", \
	OPTIONS+="all_partitions"

# SCSI devices
SUBSYSTEMS=="scsi", KERNEL=="sr[0-9]*",	NAME="scd%n", SYMLINK+="sr%n"

# USB devices
SUBSYSTEMS=="usb", KERNEL=="auer[0-9]*",	NAME="usb/%k"
SUBSYSTEMS=="usb", KERNEL=="cpad[0-9]*",	NAME="usb/%k"
SUBSYSTEMS=="usb", KERNEL=="dabusb*",		NAME="usb/%k"
SUBSYSTEMS=="usb", KERNEL=="hiddev*",		NAME="usb/%k"
SUBSYSTEMS=="usb", KERNEL=="legousbtower*",	NAME="usb/%k"
SUBSYSTEMS=="usb", KERNEL=="lp[0-9]*",		NAME="usb/%k"
SUBSYSTEMS=="usb", KERNEL=="ttyUSB*", \
	ATTRS{product}=="Palm Handheld*|Handspring Visor|palmOne Handheld", \
					SYMLINK+="pilot"

# usbfs-like devices
SUBSYSTEM=="usb_device",	PROGRAM="/bin/sh -c 'K=%k; K=$${K#usbdev}; printf bus/usb/%%03i/%%03i $${K%%%%.*} $${K#*.}'", \
				NAME="%c"

# serial devices
KERNEL=="capi",			NAME="capi20", SYMLINK+="isdn/capi20"
KERNEL=="capi[0-9]*",		NAME="capi/%n"

# video devices
KERNEL=="dvb*",			PROGRAM="/bin/sh -c 'K=%k; K=$${K#dvb}; printf dvb/adapter%%i/%%s $${K%%%%.*} $${K#*.}", \
				NAME="%c"
KERNEL=="card[0-9]*",		NAME="dri/%k"

# misc devices
KERNEL=="hw_random",		NAME="hwrng"
KERNEL=="tun",			NAME="net/%k"
KERNEL=="evtchn",		NAME="xen/%k"

KERNEL=="cdemu[0-9]*",		NAME="cdemu/%n"
KERNEL=="pktcdvd[0-9]*",	NAME="pktcdvd/%n"
KERNEL=="pktcdvd",		NAME="pktcdvd/control"

KERNEL=="cpu[0-9]*",		NAME="cpu/%n/cpuid"
KERNEL=="msr[0-9]*",		NAME="cpu/%n/msr"
KERNEL=="microcode",		NAME="cpu/microcode"

KERNEL=="umad*",		NAME="infiniband/%k"
KERNEL=="issm*",		NAME="infiniband/%k"
KERNEL=="uverbs*",		NAME="infiniband/%k"
KERNEL=="ucm*",			NAME="infiniband/%k"

# ALSA devices
KERNEL=="controlC[0-9]*",	NAME="snd/%k"
KERNEL=="hwC[D0-9]*",		NAME="snd/%k"
KERNEL=="pcmC[D0-9cp]*",	NAME="snd/%k"
KERNEL=="midiC[D0-9]*",		NAME="snd/%k"
KERNEL=="timer",		NAME="snd/%k"
KERNEL=="seq",			NAME="snd/%k"

# ieee1394 devices       
KERNEL=="dv1394*",		NAME="dv1394/%n"
KERNEL=="video1394*",		NAME="video1394/%n"

# input devices
KERNEL=="mice",			NAME="input/%k"
KERNEL=="mouse[0-9]*",		NAME="input/%k"
KERNEL=="event[0-9]*",		NAME="input/%k"
KERNEL=="js[0-9]*",		NAME="input/%k"
KERNEL=="ts[0-9]*",		NAME="input/%k"
KERNEL=="uinput",		NAME="input/%k"

# Zaptel
KERNEL=="zapctl",		NAME="zap/ctl"
KERNEL=="zaptimer",		NAME="zap/timer"
KERNEL=="zapchannel",		NAME="zap/channel"
KERNEL=="zappseudo",		NAME="zap/pseudo"
KERNEL=="zap[0-9]*",		NAME="zap/%n"

# AOE character devices
SUBSYSTEM=="aoe", KERNEL=="discover",	NAME="etherd/%k"
SUBSYSTEM=="aoe", KERNEL=="err",	NAME="etherd/%k"
SUBSYSTEM=="aoe", KERNEL=="interfaces",	NAME="etherd/%k"
SUBSYSTEM=="aoe", KERNEL=="revalidate",	NAME="etherd/%k"

# device mapper creates its own device nodes, so ignore these
KERNEL=="dm-[0-9]*",		NAME=""
KERNEL=="device-mapper",	NAME="mapper/control"