devfree(1M) MISC. REFERENCE MANUAL PAGES devfree(1M)
NAME
devfree - release devices from exclusive use
SYNOPSIS
devfree key [device [...]]
DESCRIPTION
devfree releases devices from exclusive use. Exclusive use
is requested with the command devreserv. When devfree is
invoked with only the key argument, it releases all devices
that have been reserved for that key. When called with key
and device arguments, devfree releases the specified devices
that have been reserved with that key. The arguments for
this command are:
key Designates the unique key on which the device was
reserved.
device
Defines device that this command will release from
exclusive use. Can be the pathname of the device or
the device alias.
ERRORS
The command will exit with one of the following values:
0 = successful completion of the task.
1 = command syntax incorrect, invalid option used, or inter-
nal error occurred.
2 = device table or device reservation table could not be
opened for reading.
3 = reservation release could not be completely fulfilled
because one or more of the devices was not reserved or
was not reserved on the specified key.
FILES
/etc/device.tab
/etc/devlkfile
NOTES
The commands devreserv and devfree are used to manage the
availability of devices on a system. These commands do not
place any constraints on the access to the device. They
serve only as a centralized bookkeeping point for those who
wish to use them. Processes that do not use devreserv may
concurrently use a device with a process that has reserved
that device.
SEE ALSO
devfree(3X), devreserv(1), devreserv(3X), reservdev(3X).
Last change: Essential Utilities 1