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.  Directories and files that are currently exported  are listed in the file /etc/xtab. 

With no options or arguments, exportfs prints out the list of directories 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 −2.  Setting the value of “anon” to −1 disables anonymous access.  Note: by default secure NFS accepts insecure requests as anonymous, and those wishing for extra security can disable this feature by setting “anon” to −1. 

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/netgroup database, and then the /etc/hosts 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)

WARNINGS

You cannot export a directory that is either a parent- or a sub-directory 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. 

Sun Release 4.0  —  Last change: 22 March 1989