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Manual page for EXPORTFS(8)

exportfs - export and unexport directories to NFS clients

SYNOPSIS

/usr/etc/exportfs [ -avui ] [ -o options ] [ directory ]

DESCRIPTION

exportfs makes a local directory (or file) 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 exports list (either the /etc/exports file or the NetInfo /exports directory) to export a directory (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. Directories that are currently exported are listed in the file /etc/xtab.

With no options or arguments, exportfs prints out the list of directories currently exported.

OPTIONS

-a: All. Export all directories listed in the exports list or if -u is specified, unexport all of the currently exported directories.
-v: Verbose. Print each directory as it is exported or unexported.
-u: Unexport the indicated directories.
-i: Ignore the options in the exports list. Normally, exportfs will consult the exports list for the options associated with the exported directory.
-o options: Specify a comma-separated list of optional characteristics for the directory being exported. options can be selected from among:

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

FILES

/etc/exports: static export information
/etc/xtab: current state of exported directories
/etc/netgroup

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.