systemd-stable/etc/udev/redhat/udev.rules

# There are a number of modifiers that are allowed to be used in some of the
# fields.  See the udev man page for a full description of them.
#
# See the udev.rules.examples file for more examples of how to create rules
#

# create a symlink named after the device map name
# note devmap_name comes with extras/multipath
#KERNEL="dm-[0-9]*", PROGRAM="/sbin/devmap_name %M %m", NAME="%k", SYMLINK="%c"

KERNEL="console",	NAME="%k", GROUP="tty", MODE="0600"
KERNEL="tty",		NAME="%k", GROUP="tty", MODE="0666"
KERNEL="tty[0-9]*",	NAME="%k", GROUP="tty"

KERNEL="ptmx",		NAME="%k", GROUP="tty", MODE="0666"
KERNEL="pty[p-za-e][0-9a-f]*",	NAME="%k", GROUP="tty"
KERNEL="tty[p-za-e][0-9a-f]*",	NAME="%k", GROUP="tty"

KERNEL="ttyS[0-9]*",	NAME="%k", GROUP="uucp"
KERNEL="ttyUSB[0-9]*",	NAME="%k", GROUP="uucp"
KERNEL="ippp0",		NAME="%k"
KERNEL="isdn*",		NAME="%k"
KERNEL="dcbri*",	NAME="%k"
KERNEL="ircomm*",	NAME="%k", GROUP="uucp"

KERNEL="vcs",		NAME="%k", OWNER="vcsa", GROUP="tty", MODE="0600"
KERNEL="vcsa[0-9]*",	NAME="%k", OWNER="vcsa", GROUP="tty", MODE="0600

# memory devices¶
KERNEL="random",	NAME="%k", MODE="0666"
KERNEL="urandom",	NAME="%k", MODE="0444"
KERNEL="mem",		NAME="%k", MODE="0640"
KERNEL="kmem",		NAME="%k", MODE="0640"
KERNEL="port",		NAME="%k", MODE="0640"
KERNEL="full",		NAME="%k", MODE="0666"
KERNEL="null",		NAME="%k", MODE="0666"
KERNEL="zero",		NAME="%k", MODE="0666"

# DRI devices always go into a subdirectory (as per the LSB spec)
KERNEL="card*",		NAME="dri/card%n"

# alsa devices
KERNEL="controlC[0-9]*",	NAME="snd/%k"
KERNEL="hw[CD0-9]*",		NAME="snd/%k"
KERNEL="pcm[CD0-9cp]*",		NAME="snd/%k"
KERNEL="midi[CD0-9]*",		NAME="snd/%k"
KERNEL="timer",			NAME="snd/%k"
KERNEL="seq",			NAME="snd/%k"

# input devices
KERNEL="mice",		NAME="input/%k"
KERNEL="mouse*",	NAME="input/%k"
KERNEL="event*",	NAME="input/%k"
KERNEL="js*",		NAME="input/%k"
KERNEL="ts*",		NAME="input/%k"

KERNEL="raw[0-9]*", 	NAME="raw/%k"

KERNEL="lp[0-9]*",	SYMLINK="par%n"
BUS="usb", KERNEL="lp[0-9]*", NAME="usb/%k"

KERNEL="microcode",     SYMLINK="cpu/0/%k"
KERNEL="ram1", 		SYMLINK="ram"
KERNEL="video0",	SYMLINK="video"
KERNEL="radio0",	SYMLINK="radio"
KERNEL="audio0",	SYMLINK="audio"
KERNEL="dsp0",		SYMLINK="dsp"
KERNEL="fb0",		SYMLINK="fb"
KERNEL="qft0",		SYMLINK="ftape"
KERNEL="isdnctrl0",	SYMLINK="isdnctrl"
KERNEL="mixer0",	SYMLINK="mixer"
KERNEL="ram0",		SYMLINK="ramdisk"
KERNEL="sbpcd0",	SYMLINK="sbpcd"
KERNEL="radio0",	SYMLINK="radio"
KERNEL="tty0",		SYMLINK="systty"
KERNEL="vbi0",		SYMLINK="vbi"
KERNEL="null",		SYMLINK="XOR"

KERNEL="tun",		NAME="net/%k"

KERNEL="device-mapper",	NAME="mapper/control"

# old compat symlinks with enumeration
KERNEL="sr[0-9]*",	SYMLINK="cdrom%e"
KERNEL="scd[0-9]*",	SYMLINK="cdrom%e"
KERNEL="pcd[0-9]*",	SYMLINK="cdrom%e"
KERNEL="fd[0-9]*",	SYMLINK="floppy%e"
KERNEL="nst[0-9]*",	SYMLINK="tape%e"

KERNEL="hd[a-z]", BUS="ide", SYSFS{removable}="1", PROGRAM="/etc/udev/scripts/ide-media.sh %k", RESULT="floppy", SYMLINK="floppy%e, NAME{ignore_remove, all_partitions}="%k", GROUP="floppy"

KERNEL="hd[a-z]", BUS="ide", SYSFS{removable}="1", RESULT="cdrom", SYMLINK="cdrom%e"

KERNEL="hd[a-z]", BUS="ide", SYSFS{removable}="1", PROGRAM="/etc/udev/scripts/check-cdrom.sh %k DVD", SYMLINK="dvd%e"
KERNEL="sr[0-9]*", BUS="scsi", PROGRAM="/etc/udev/scripts/check-cdrom.sh %k DVD", SYMLINK="dvd%e"

KERNEL="hd[a-z]", BUS="ide", SYSFS{removable}="1", PROGRAM="/etc/udev/scripts/check-cdrom.sh %k CD-R", SYMLINK="cdwriter%e"
KERNEL="sr[0-9]*", BUS="scsi", PROGRAM="/etc/udev/scripts/check-cdrom.sh %k CD-R", SYMLINK="cdwriter%e"

KERNEL="hd[a-z]", BUS="ide", SYSFS{removable}="1", PROGRAM="/etc/udev/scripts/check-cdrom.sh %k DVD-R", SYMLINK="dvdwriter%e"
KERNEL="sr[0-9]*", BUS="scsi", PROGRAM="/etc/udev/scripts/check-cdrom.sh %k DVD-R", SYMLINK="dvdwriter%e"

# rename sr* to scd*
KERNEL="sr[0-9]*", BUS="scsi", NAME="scd%n", GROUP="disk", MODE="0640"
KERNEL="hd[a-z]*", BUS="ide", SYSFS{removable}="1", NAME{ignore_remove}="%k", GROUP="disk", MODE="0640"

# all block devices
SUBSYSTEM="block",	NAME="%k", GROUP="disk", MODE="0640"

KERNEL="dvb*", PROGRAM="/etc/udev/scripts/dvb.sh %k", NAME="%c"