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 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 permissions to which the devices in the device_list field (third field) will be set.  A device_list is a colon-separated list of device names.  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 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. 

Sun Microsystems  —  Last change: 16 August 1993