busybox/examples/mdev.conf
<<
>>
Prefs
   1#
   2# This is a sample mdev.conf
   3#
   4
   5# Provide user, group, and mode information for devices.  If a regex matches
   6# the device name provided by sysfs, use the appropriate user:group and mode
   7# instead of the default 0:0 660.
   8#
   9# Syntax:
  10# [-]devicename_regex user:group mode [=path]|[>path]|[!] [@|$|*cmd args...]
  11# [-]$ENVVAR=regex    user:group mode [=path]|[>path]|[!] [@|$|*cmd args...]
  12# [-]@maj,min[-min2]  user:group mode [=path]|[>path]|[!] [@|$|*cmd args...]
  13#
  14# [-]: do not stop on this match, continue reading mdev.conf
  15# =: move, >: move and create a symlink
  16# !: do not create device node
  17# @|$|*: run@cmd if $ACTION=add,  $cmd if $ACTION=remove, *cmd in all cases
  18
  19null            0:0 666
  20zero            0:0 666
  21urandom         0:0 444
  22
  23kmem            0:9 000
  24mem             0:9 640
  25port            0:9 640
  26
  27console         0:5 600
  28ptmx            0:5 660
  29tty[0-9]*       0:5 660
  30
  31ttyS[0-9]*      0:20 640
  32
  33fd[0-9]*        0:11 660
  34
  35sd[a-z]*        0:6 660
  36hd[a-z]*        0:6 660
  37
  38hw_random       0:0 600 =hwrng
  39