unixdev.net


Switch to SpeakEasy.net DSL

The Modular Manual Browser

Home Page
Manual: (SunOS-4.1.3)
Page:
Section:
Apropos / Subsearch:
optional field

EXPORTFS(8)                 System Manager's Manual                EXPORTFS(8)



NAME
       exportfs - export and unexport directories to NFS clients

SYNOPSIS
       /usr/etc/exportfs [ -aiuv ] [ -o options ] [ pathname ]

DESCRIPTION
       exportfs  makes  a  local  directory or filename available for mounting
       over the network by NFS clients.  It is normally invoked at  boot  time
       by  the  /etc/rc.local  script,  and  uses information contained in the
       /etc/exports file to export pathname (which must be specified as a full
       pathname).   The  super-user  can run exportfs at any time to alter the
       list or characteristics of exported directories and filenames.   Direc-
       tories  and  files  that are currently exported  are listed in the file
       /etc/xtab.

       With no options or arguments, exportfs prints out the list of  directo-
       ries and filenames currently exported.

OPTIONS
       -a     All.   Export  all pathnames listed in /etc/exports, or if -u is
              specified, unexport all of the currently exported pathnames.

       -i     Ignore the options in  /etc/exports.   Normally,  exportfs  will
              consult   /etc/exports  for  the  options  associated  with  the
              exported pathname.

       -u     Unexport the indicated pathnames.

       -v     Verbose.  Print each directory or filename as it is exported  or
              unexported.

       -o options
              Specify  a  comma-separated list of optional characteristics for
              the pathname being  exported.   options  can  be  selected  from
              among:

              ro     Export  the  pathname  read-only.  If  not specified, the
                     pathname is exported read-write.

              rw=hostname[:hostname]...
                     Export  the  pathname  read-mostly.   Read-mostly   means
                     exported  read-only  to  most machines, but read-write to
                     those specified.   If  not  specified,  the  pathname  is
                     exported read-write to all.

              anon=uid
                     If  a  request comes from an unknown user, use UID as the
                     effective user ID.  Note: root users (UID 0)  are  always
                     considered  "unknown"  by the NFS server, unless they are
                     included in the root option below.  The default value for
                     this option is the UID of the user "nobody".  If the user
                     "nobody" does not exist then the  value  65534  is  used.
                     Setting  the  value of "anon" to 65535 disables anonymous
                     access.  Note: by default  secure  NFS  accepts  insecure
                     requests  as anonymous, and those wishing for extra secu-
                     rity can disable this feature by setting "anon" to 65535.

              root=hostname[:hostname]...
                     Give root access only to the root users from a  specified
                     hostname.  The default is for no hosts to be granted root
                     access.

              access=client[:client]...
                     Give mount access to each client listed.   A  client  can
                     either  be  a  hostname, or a netgroup (see netgroup(5)).
                     Each client in the list  is  first  checked  for  in  the
                     /etc/hosts database, and then the /etc/netgroup database.
                     The default value allows any machine to mount  the  given
                     directory.

              secure Require  clients  to  use  a  more  secure  protocol when
                     accessing the directory.

FILES
       /etc/exports        static export information
       /etc/xtab           current state of exported pathnames
       /etc/netgroup

SEE ALSO
       exports(5), netgroup(5), showmount(8)

WARNINGS
       You cannot export a directory that is either a parent- or a  sub-direc-
       tory  of one that is currently exported and within the same filesystem.
       It would be illegal, for example, to export both /usr and /usr/local if
       both directories resided in the same disk partition.



                                7 October 1990                     EXPORTFS(8)