source: scripts/configs/udev/udev-config-3.rules@ f8736bc

# /etc/udev/rules.d/25-lfs.rules: Rule definitions for LFS.

# Create the /dev/cdrom symlink.

BUS="ide", KERNEL="*[!0-9]", PROGRAM="/bin/cat /proc/ide/%k/media", RESULT="cdrom", NAME="%k", SYMLINK="cdrom"

# Core kernel devices

KERNEL="ptmx",    GROUP="tty",  MODE="0666"
KERNEL="random",                MODE="0444"
KERNEL="urandom",               MODE="0444"
KERNEL="kmem",    GROUP="kmem", MODE="0640"
KERNEL="mem",     GROUP="kmem", MODE="0640"
KERNEL="port",    GROUP="kmem", MODE="0640"
KERNEL="null",                  MODE="0666"
KERNEL="zero",                  MODE="0666"
KERNEL="full",                  MODE="0666"
KERNEL="aio",                   MODE="0444"
KERNEL="kmsg",                  MODE="0600"
KERNEL="rtc",                   MODE="0666"

# Comms devices

KERNEL="ttyS[0-9]*",                   GROUP="dialout"
KERNEL="ttyUSB[0-9]*",                 GROUP="dialout"
KERNEL="rfcomm[0-9]*",                 GROUP="dialout"
KERNEL="tty[BCDEFHILMPRSTUVWX][0-9]*", GROUP="dialout"
KERNEL="ttyS[ACIR][0-9]*",             GROUP="dialout"
KERNEL="ttyUSB[0-9]*",                 GROUP="dialout"
KERNEL="ttyACM[0-9]*",                 GROUP="dialout"
KERNEL="ippp[0-9]*",                   GROUP="dialout"
KERNEL="isdn[0-9]*",                   GROUP="dialout"
KERNEL="isdnctrl[0-9]*",               GROUP="dialout"
KERNEL="capi",         NAME="capi20",  SYMLINK="isdn/capi20"
KERNEL="capi*",        NAME="capi/%n", GROUP="dialout"
KERNEL="dcbri[0-9]*",                  GROUP="dialout"
KERNEL="ircomm[0-9]*",                 GROUP="dialout"

# TTY's

KERNEL="tty",       GROUP="tty", MODE="0666"
KERNEL="tty[0-9]*", GROUP="tty", MODE="0666"
KERNEL="vcs*",                   MODE="0600"
KERNEL="console",   GROUP="tty", MODE="0622"

# ALSA devices go in their own subdirectory

KERNEL="controlC[0-9]*", NAME="snd/%k", GROUP="audio"
KERNEL="hw[CD0-9]*",     NAME="snd/%k", GROUP="audio"
KERNEL="pcm[CD0-9cp]*",  NAME="snd/%k", GROUP="audio"
KERNEL="midiC[D0-9]*",   NAME="snd/%k", GROUP="audio"
KERNEL="timer",              NAME="snd/%k", GROUP="audio"
KERNEL="seq",                NAME="snd/%k", GROUP="audio"

# Sound devices

KERNEL="admmidi*",                      GROUP="audio"
KERNEL="adsp*",                         GROUP="audio"
KERNEL="aload*",                        GROUP="audio"
KERNEL="amidi*",                        GROUP="audio"
KERNEL="amixer*",                       GROUP="audio"
KERNEL="audio*",                        GROUP="audio"
KERNEL="dmfm*",                         GROUP="audio"
KERNEL="dmmidi*",                       GROUP="audio"
KERNEL="dsp*",                          GROUP="audio"
KERNEL="midi*",                         GROUP="audio"
KERNEL="mixer*",                        GROUP="audio"
KERNEL="music",                         GROUP="audio"
KERNEL="sequencer*",                    GROUP="audio"

# Printing devices

KERNEL="lp[0-9]*",      GROUP="lp"
KERNEL="parport[0-9]*", GROUP="lp"
KERNEL="irlpt[0-9]*",   GROUP="lp"

# Input devices go in their own subdirectory

KERNEL="mice",          NAME="input/%k", MODE="0644"
KERNEL="mouse*",        NAME="input/%k", MODE="0644", SYMLINK="mouse"
KERNEL="event*",        NAME="input/%k", MODE="0644"
KERNEL="js*",           NAME="input/%k", MODE="0644"
KERNEL="ts*",           NAME="input/%k", MODE="0644"

KERNEL="psaux",                      MODE="0644"
KERNEL="js",                         MODE="0644"
KERNEL="djs",                        MODE="0644"

# USB devices go in their own subdirectory

KERNEL="hiddev*",       NAME="usb/%k"
KERNEL="auer*",             NAME="usb/%k"
KERNEL="legousbtower*", NAME="usb/%k"
KERNEL="dabusb*",       NAME="usb/%k"
BUS="usb", KERNEL="lp[0-9]*", NAME="usb/%k", GROUP="lp"

# DRI devices go in their own subdirectory for FHS compliance

KERNEL="card*",          NAME="dri/card%n", GROUP="video"

# Video devices

KERNEL="fb[0-9]*",     GROUP="video", MODE="0620"
KERNEL="agpgart",      GROUP="video"
KERNEL="nvidia[0-9]*", GROUP="video"
KERNEL="nvidiactl",    GROUP="video"
KERNEL="video[0-9]*",  GROUP="video"
KERNEL="radio[0-9]*",  GROUP="video"
KERNEL="vbi[0-9]*",    GROUP="video"
KERNEL="vtx[0-9]*",    GROUP="video"

# Storage/memory devices

KERNEL="fd[0-9]*",                 GROUP="floppy"
KERNEL="ram[0-9]*",                GROUP="disk"
KERNEL="raw[0-9]*", NAME="raw/%k", GROUP="disk"
KERNEL="hd*",                      GROUP="disk"
KERNEL="sd[a-z]",                  GROUP="disk"
KERNEL="sd[a-z][0-9]*",            GROUP="disk"
KERNEL="sd[a-i][a-z]",             GROUP="disk"
KERNEL="sd[a-i][a-z][0-9]*",       GROUP="disk"
KERNEL="s[grt][0-9]*",             GROUP="disk"
KERNEL="scd[0-9]*",                GROUP="cdrom"
KERNEL="dasd[0-9]*",               GROUP="disk"
KERNEL="ataraid[0-9]*",            GROUP="disk"
KERNEL="loop[0-9]*",               GROUP="disk"
KERNEL="md[0-9]*",                 GROUP="disk"
KERNEL="dm-*",                     GROUP="disk",   MODE="0640"
KERNEL="ht[0-9]*",                 GROUP="tape"
KERNEL="nht[0-9]*",                GROUP="tape"
KERNEL="pt[0-9]*",                 GROUP="tape"
KERNEL="npt[0-9]*",                GROUP="tape"
KERNEL="st[0-9]*",                 GROUP="tape"
KERNEL="nst[0-9]*",                GROUP="tape"
KERNEL="iseries/vcd*",             GROUP="disk"
KERNEL="iseries/vd*",              GROUP="disk"

# Network devices

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