devfree(1M)						  System Administration Commands					       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

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       devreserv(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  con-
       straints 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.

SunOS 5.10							    5 Jul 1990							       devfree(1M)