logindevperm(4)

NAME

     logindevperm, fbtab - login-based device permissions

SYNOPSIS

     /etc/logindevperm

DESCRIPTION

     The /etc/logindevperm file contains information that is used
     by  login(1)  and ttymon(1M) to change the owner, group, and
     permissions of devices upon logging into or out of a console
     device.  By  default,  this file contains lines for the key-
     board, mouse, audio, and frame buffer devices.

     The owner of the devices listed in /etc/logindevperm is  set
     to  the  owner  of the console by login(1). The group of the
     devices  is  set  to  the   owner's   group   specified   in
     /etc/passwd.   The  permissions  are  set  as  specified  in
     /etc/logindevperm.

     Fields are separated by TAB and/or SPACE  characters.  Blank
     lines and comments can appear anywhere in the file; comments
     start with a hashmark, ` # ', and continue to the end of the
     line.

     The first field specifies the name of a console device  (for
     example,  /dev/console). The second field specifies the per-
     missions to which  the  devices  in  the  device_list  field
     (third  field)  will  be  set.  These  permissions  must  be
     expressed in octal format. For example, O774.  A device_list
     is  a colon-separated list of device names. Note that a dev-
     ice name must be a /dev link.  A  device  entry  that  is  a
     directory  name  and ends with "/*" specifies all entries in
     the  directory  (except  "."   and   "..").   For   example,
     "/dev/fbs/*" specifies all frame buffer devices.

     Once the devices are owned by the  user,  their  permissions
     and ownership can be changed using chmod(1) and chown(1), as
     with any other user-owned file.

     Upon logout the owner and group of  these  devices  will  be
     reset by ttymon(1M) to owner root and root's group as speci-
     fied in /etc/passwd (typically other). The  permissions  are
     set as specified in the /etc/logindevperm file.

FILES

     /etc/passwd
           File that contains user group information.

SEE ALSO

     chmod(1), chown(1), login(1), ttymon(1M), passwd(4)

NOTES

     /etc/logindevperm provides a superset of  the  functionality
     provided by /etc/fbtab in SunOS 4.x releases.