EXPORTFS(4) EXPORTFS(4)
NAME
exportfs, srvfs - network file server plumbing
SYNOPSIS
exportfs [ -an ] [ -c ctlfile ]
srvfs name dir
DESCRIPTION
Exportfs is a user level file server that allows Plan 9 com-
pute servers, rather than file servers, to export portions
of a name space across networks. The service is started
either by the cpu(1) command or by a network listener pro-
cess. An initial protocol establishes a root directory for
the exported name space. The connection to exportfs is then
mounted, typically on /mnt/term. Exportfs then acts as a
relay file server: operations in the imported file tree are
executed on the remote server and the results returned.
This gives the appearance of exporting a name space from a
remote machine into a local file tree.
The -a option instructs exportfs to authenticate the user,
usually because it is being invoked from a remote machine.
The -n option disallows export to user none.
The -c options specifies a network control file onto which
exportfs will push the fcall line discipline. This option
is intended for networks that do not preserve read/write
boundaries.
The cpu command uses exportfs to serve device files in the
terminal. The import(4) command calls exportfs on a remote
machine, permitting users to access arbitrary pieces of name
space on other systems.
Srvfs uses exportfs to create a mountable file system from a
name space: a subsequent mount (see bind(1)) of /srv/name
will reproduce the name space rooted at dir. One might use
srvfs to enable mounting of an FTP file system (see
ftpfs(4)) in several windows.
SOURCE
/sys/src/cmd/exportfs
/sys/src/cmd/srvfs.c
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