# mdev-like-a-boss

# Syntax:
# [-]devicename_regex user:group mode [=path]|[>path]|[!] [@|$|*cmd args...]
# [-]$ENVVAR=regex    user:group mode [=path]|[>path]|[!] [@|$|*cmd args...]
# [-]@maj,min[-min2]  user:group mode [=path]|[>path]|[!] [@|$|*cmd args...]
#
# [-]: do not stop on this match, continue reading mdev.conf
# =: move, >: move and create a symlink
# !: do not create device node
# @|$|*: run cmd if $ACTION=remove, @cmd if $ACTION=add, *cmd in all cases

# support module loading on hotplug
$MODALIAS=.*    root:root 660 @modprobe -b "$MODALIAS"

# null may already exist; therefore ownership has to be changed with command
null        root:root 666 @chmod 666 $MDEV
zero        root:root 666
full        root:root 666
random      root:root 444
urandom     root:root 444
hwrandom    root:root 444
grsec       root:root 660

# Kernel-based Virtual Machine.
kvm     root:kvm 660

# vhost-net, to be used with kvm.
vhost-net   root:kvm 660

kmem        root:root 640
mem         root:root 640
port        root:root 640
# console may already exist; therefore ownership has to be changed with command
console     root:tty 600 @chmod 600 $MDEV
ptmx        root:tty 666
pty.*       root:tty 660

# Typical devices
tty         root:tty 666
tty[0-9]*   root:tty 660
vcsa*[0-9]* root:tty 660
ttyS[0-9]*  root:tty 660

# block devices
ram([0-9]*)     root:disk 660 >rd/%1
loop([0-9]+)    root:disk 660 >loop/%1
sd[a-z].*       root:disk 660 */opt/mdev/helpers/storage-device
vd[a-z].*       root:disk 660 */opt/mdev/helpers/storage-device
hd[a-z].*       root:disk 660 */opt/mdev/helpers/storage-device
md[0-9]*        root:disk 660 */opt/mdev/helpers/storage-device
dm-[0-9]*       root:disk 660 */opt/mdev/helpers/storage-device
bcache[0-9]*    root:disk 660 */opt/mdev/helpers/storage-device
mmcblk[0-9].*   root:disk 660 */opt/mdev/helpers/storage-device
sr[0-9]*        root:cdrom 660 @ln -sf $MDEV cdrom
fd[0-9]*        root:floppy 660

# Run settle-nics every time new NIC appear.
# If you don't want to auto-populate /etc/mactab with NICs, run 'settle-nis' without '--write-mactab' param.
-SUBSYSTEM=net;DEVPATH=.*/net/.*;.*     root:root 600 @/opt/mdev/helpers/settle-nics --write-mactab

net/tun[0-9]*   root:kvm 660
net/tap[0-9]*   root:root 600

# alsa sound devices and audio stuff
SUBSYSTEM=sound;.*  root:audio 660 @/opt/mdev/helpers/sound-control

adsp        root:audio 660 >sound/
audio       root:audio 660 >sound/
dsp         root:audio 660 >sound/
mixer       root:audio 660 >sound/
sequencer.* root:audio 660 >sound/


# raid controllers
cciss!(.*)  root:disk 660 =cciss/%1
ida!(.*)    root:disk 660 =ida/%1
rd!(.*)     root:disk 660 =rd/%1


fuse        root:root 666

card[0-9]   root:video 660 =dri/

agpgart     root:root 660 >misc/
psaux       root:root 660 >misc/
rtc         root:root 664 >misc/

# input stuff
SUBSYSTEM=input;.* root:input 660

# v4l stuff
vbi[0-9]    root:video 660 >v4l/
video[0-9]  root:video 660 >v4l/

# dvb stuff
dvb.*       root:video 660

# drm etc
dri/.*      root:video 660

# Don't create old usbdev* devices.
usbdev[0-9].[0-9]* root:root 660 !

# Stop creating x:x:x:x which looks like /dev/dm-*
[0-9]+\:[0-9]+\:[0-9]+\:[0-9]+ root:root 660 !

# /dev/cpu support.
microcode       root:root 600 =cpu/
cpu([0-9]+)     root:root 600 =cpu/%1/cpuid
msr([0-9]+)     root:root 600 =cpu/%1/msr

# Populate /dev/bus/usb.
SUBSYSTEM=usb;DEVTYPE=usb_device;.* root:root 660 */opt/mdev/helpers/dev-bus-usb

# Catch-all other devices, Right now useful only for debuging.
#.* root:root 660 */opt/mdev/helpers/catch-all