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devassign(4)							  devassign(4)

NAME
       devassign - Device assignment database file (Enhanced Security)

DESCRIPTION
       The  system  supports a single device assignment database that contains
       entries for login terminals and X  terminals.  Authentication  programs
       use  information	 in  the  device assignment database to determine if a
       login is permitted on the terminal.  Information from the terminal con‐
       trol database, /etc/auth/system/ttys.db, can also affect terminal login
       permissions.

       A device assignment database entry consists of  keyword	field  identi‐
       fiers  and  values for those fields. If a necessary value is not speci‐
       fied in an entry, a default value for the field is  supplied  from  the
       system  default	file,  /etc/auth/system/default. The edauth utility is
       used to alter device assignment database entries.

       The format of the terminal control database file is identical to	 other
       system authentication database files and is described in the authcap(4)
       reference page. The following keyword identifiers  are  supported:  The
       identifier  in  this  field specifies a comma-separated list of aliases
       that refer to the same device defined by the entry. Use of  this	 field
       avoids the need to replicate device assignment database entries for all
       device aliases. This field is ignored if it is set in a template or  in
       the  default  database.	 This  field  specifies	 the  device  that  is
       described by the entry. Device types supported include: The  device  is
       assigned as a local login terminal device.  The X windows display entry
       for handling graphics heads or X terminals.

	      This field is ignored if it is set  in  a	 template  or  in  the
	      default  database.   This field, if specified, contains a comma-
	      separated list of user names  that  are  permitted  to  use  the
	      device  for  login or the import and export of data. If the list
	      is not present, all users are permitted to use  the  device.  If
	      the  list	 is  present,  it is searched for a match by the login
	      program to determine if the user is permitted to use the device.

	      This field is ignored if it is set  in  a	 template  or  in  the
	      default database.

EXAMPLES
       The  following  example	shows a device assignment database entry for a
       terminal device with a list of allowed users:

       tty0:v_devs=/dev/tty0:\	    :v_type=terminal:v_users=may,tdy,ssv,rgb:\
	    :chkent:

       The following example shows a device assignment database entry for an X
       terminal device:

       local\:0|local\:0.0:v_devs=local\:0,local\:0.0:v_type=xdisplay:chkent:

FILES
       Specifies the pathname of the file.

SEE ALSO
       Commands: cpio(1), login(1), tar(1), edauth(8)

       Functions: getdvagent(3)

       Files: authcap(4), default(4), ttys(4)

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