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File Formatslogindevperm(4)


 logindevperm, fbtab - login-based device permissions





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.


File that contains user group information.



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



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

SunOS 5.9Go To TopLast Changed 16 August 1993

Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.