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