devfree

 

---

 
 
 
 Maintenance 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:
 
      key   Designates the unique key  on  which  the  device  was
            reserved.
 
      device
            Defines device that this  command  will  release  from
            exclusive  use. device can be the pathname of the dev-
            ice or the device alias.
 
 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  attri-
      butes:
 
 
 
 
 
 SunOS 5.8            Last change: 5 Jul 1990                    1
 
 
 
 
 
 
 Maintenance Commands                                  devfree(1M)
 
 
 
      ____________________________________________________________
     |       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  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.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 SunOS 5.8            Last change: 5 Jul 1990                    2
 
 
 

---