# # This is a sample mdev.conf # # Provide user, group, and mode information for devices. If a regex matches # the device name provided by sysfs, use the appropriate user:group and mode # instead of the default 0:0 660. # # Syntax: # [-][ENVVAR=regex;]...devicename_regex user:group mode [=path]|[>path]|[!] [@|$|*cmd args...] # [-][ENVVAR=regex;]...@maj,min[-min2] user:group mode [=path]|[>path]|[!] [@|$|*cmd args...] # [-]$ENVVAR=regex user:group mode [=path]|[>path]|[!] [@|$|*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 $MODALIAS=.* root:root 660 @modprobe "$MODALIAS" # null may already exist; therefore mode 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 kmem root:root 640 mem root:root 640 port root:root 640 # console may already exist; therefore mode 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:uucp 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 */lib/mdev/usbdisk_link hd[a-z][0-9]* root:disk 660 */lib/mdev/ide_links md[0-9]* root:disk 660 sr[0-9]* root:cdrom 660 @ln -sf $MDEV cdrom fd[0-9]* root:floppy 660 # net devices SUBSYSTEM=net;.* root:root 600 @nameif tun[0-9]* root:root 600 =net/ tap[0-9]* root:root 600 =net/ # alsa sound devices and audio stuff pcm.* root:audio 660 =snd/ control.* root:audio 660 =snd/ midi.* root:audio 660 =snd/ seq root:audio 660 =snd/ timer root:audio 660 =snd/ # for kernels/mdevs which expose full path of alsa devices: snd/pcm.* root:audio 660 snd/control.* root:audio 660 snd/midi.* root:audio 660 snd/seq root:audio 660 snd/timer root:audio 660 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/ # Less typical devices # raid controllers cciss!(.*) root:disk 660 =cciss/%1 ida!(.*) root:disk 660 =ida/%1 rd!(.*) root:disk 660 =rd/%1 ttyLTM[0-9] root:dialout 660 @ln -sf $MDEV modem ttySHSF[0-9] root:dialout 660 @ln -sf $MDEV modem slamr root:dialout 660 @ln -sf $MDEV slamr0 slusb root:dialout 660 @ln -sf $MDEV slusb0 fuse root:root 666 # dri device card[0-9] root:video 660 =dri/ # misc stuff agpgart root:root 660 >misc/ psaux root:root 660 >misc/ rtc root:root 664 >misc/ # input stuff event[0-9]+ root:root 640 =input/ mice root:root 640 =input/ mouse[0-9] root:root 640 =input/ ts[0-9] root:root 600 =input/ # v4l stuff vbi[0-9] root:video 660 >v4l/ video[0-9] root:video 660 >v4l/ # dvb stuff dvb.* root:video 660 */lib/mdev/dvbdev # load drivers for usb devices usbdev[0-9].[0-9] root:root 660 */lib/mdev/usbdev usbdev[0-9].[0-9]_.* root:root 660 # zaptel devices zap(.*) root:dialout 660 =zap/%1 dahdi!(.*) root:dialout 660 =dahdi/%1 # HTC Android # Attaching it via USB cable causes a flurry of activity: # # mdev[1271]: 48.639459 ACTION:add SUBSYSTEM:usb DEVNAME:bus/usb/001/009 DEVPATH:/devices/pci0000:00/0000:00:02.1/usb1/1-5 # mdev[1271]: mknod bus/usb/001/009 (189,8) 20660 0:0 # mdev[1272]: 48.642354 ACTION:add SUBSYSTEM:usb DEVNAME:(null) DEVPATH:/devices/pci0000:00/0000:00:02.1/usb1/1-5/1-5:1.0 # mdev[1272]: running: modprobe "$MODALIAS" # mdev[1273]: 48.650078 ACTION:add SUBSYSTEM:scsi DEVNAME:(null) DEVPATH:/devices/pci0000:00/0000:00:02.1/usb1/1-5/1-5:1.0/host11 # mdev[1274]: 48.651297 ACTION:add SUBSYSTEM:scsi_host DEVNAME:(null) DEVPATH:/devices/pci0000:00/0000:00:02.1/usb1/1-5/1-5:1.0/host11/scsi_host/host11 # mdev[1275]: 49.649422 ACTION:add SUBSYSTEM:scsi DEVNAME:(null) DEVPATH:/devices/pci0000:00/0000:00:02.1/usb1/1-5/1-5:1.0/host11/target11:0:0 # mdev[1276]: 49.650703 ACTION:add SUBSYSTEM:scsi DEVNAME:(null) DEVPATH:/devices/pci0000:00/0000:00:02.1/usb1/1-5/1-5:1.0/host11/target11:0:0/11:0:0:0 # mdev[1276]: running: modprobe "$MODALIAS" # modprobe: module scsi:t-0x00 not found in modules.dep # mdev[1277]: 49.658002 ACTION:add SUBSYSTEM:scsi_disk DEVNAME:(null) DEVPATH:/devices/pci0000:00/0000:00:02.1/usb1/1-5/1-5:1.0/host11/target11:0:0/11:0:0:0/scsi_disk/11:0:0:0 # mdev[1278]: 49.659244 ACTION:add SUBSYSTEM:scsi_device DEVNAME:(null) DEVPATH:/devices/pci0000:00/0000:00:02.1/usb1/1-5/1-5:1.0/host11/target11:0:0/11:0:0:0/scsi_device/11:0:0: # mdev[1279]: 49.660535 ACTION:add SUBSYSTEM:bsg DEVNAME:bsg/11:0:0:0 DEVPATH:/devices/pci0000:00/0000:00:02.1/usb1/1-5/1-5:1.0/host11/target11:0:0/11:0:0:0/bsg/11:0:0:0 # mdev[1279]: mknod bsg/11:0:0:0 (253,1) 20660 0:0 # mdev[1280]: 49.663516 ACTION:add SUBSYSTEM:bdi DEVNAME:(null) DEVPATH:/devices/virtual/bdi/8:16 # mdev[1281]: 49.664748 ACTION:add SUBSYSTEM:block DEVNAME:sdb DEVPATH:/block/sdb # mdev[1281]: mknod sdb (8,16) 60660 0:0 # mdev[1282]: 49.677597 ACTION:change SUBSYSTEM:block DEVNAME:sdb DEVPATH:/block/sdb # mdev[1283]: 50.692936 ACTION:change SUBSYSTEM:block DEVNAME:sdb DEVPATH:/block/sdb # # We are hooking to the last events. To avoid having two scripts running, # we check for DISK_MEDIA_CHANGE=1 (prev to last event has it, # and it's the _only_ difference in env for these two events as of kernel 3.7.7) # Unfortunately, there is no event for "user pressed [Turn USB storage on] btn"! # Script merely backgrounds and tries to rescan partition table for 1 minute: ACTION=change;SUBSYSTEM=block;DISK_MEDIA_CHANGE=1;.* 0:0 660 */etc/mdev.conf.change_blockdev.sh