DEVFREE(1M)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.
OPERANDS
The following operands are supported:
device
Defines device that this command will release from exclusive
use. device can be the pathname of the device or the device
alias.
key
Designates the unique key on which the device was reserved.
EXIT STATUS
The following exit values are returned:
0
Successful completion.
1
Command syntax was incorrect, an invalid option was used, or an
internal 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
SEE ALSOdevreserv(1M), attributes(5)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 devre‐
serv may concurrently use a device with a process that has reserved
that device.
Jul 5, 1990 DEVFREE(1M)