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logindevperm(4)                  File Formats                  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 keyboard, 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 hash-
       mark, ` # ', 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 permissions to which the
       devices in the device_list field (third field) will be set.  These per-
       missions  must  be  expressed  in  octal  format. For example, O774.  A
       device_list is a colon-separated list of device  names.   Note  that  a
       device  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  tty-
       mon(1M)  to  owner  root  and  root's group as specified 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.




SunOS 5.10                        22 Oct 2003                  logindevperm(4)