HP-UX Reference (11i v2 04/09) - 4 File Formats (vol 8)

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exports(4) exports(4)
NAME
exports, xtab - directories to export to NFS clients
SYNOPSIS
/etc/exports
/etc/xtab
DESCRIPTION
File /etc/exports describes the directories that can be exported to NFS clients. The system adminis-
trator creates it using a text editor.
mountd processes it each time a mount request is received (see
mountd(1M)).
/etc/exports is read automatically by the
exportfs command (see exportfs (1M)). If this file is
changed,
exportfs must be run (exportfs -a
) before the changes can affect the daemon’s operation.
If this file is present at boot time, the
/sbin/init.d/nfs.server
script will execute an exportfs
command and export the file systems listed in the file.
/etc/xtab contains entries for directories that are currently exported. This file should only be accessed
by programs using getexportent. (Use exportfs -u
to remove entries from this file).
An entry for a directory consists of a command line of the following form:
directory
- option [, option ] ...
where directory is the path name of a directory (or file).
options can have any of the following values and forms:
ro Export the directory read-only. If not specified, the directory is exported read-write. The
ro and rw options cannot be used on the same exports line.
rw=hostname [:hostname ]...
Export the directory read-mostly. Read-mostly means read-only to most machines, but
read-write to those specified. If neither ro nor rw is specified, the directory is exported
read-write to all. The ro and rw options cannot be used on the same exports line. Up to
256 hostnames can be specified. With a server configured for DNS naming in the
nsswitch "hosts" entry, any hostname must be represented as a fully qualified DNS name.
Currently HP-UX will attempt to match a non-fully qualified hostname; this HP-only
feature will be obsoleted in a later release of HP-UX.
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 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. Up to 256 hostnames can be specified. hostname s on this
list are not guaranteed to successfully mount the specified file system. If a non-empty
access list is specified, the hostname must also meet one of the access_list criteria
described below as well. Up to 256 hostnames can be specified. With a server configured
for DNS naming in the nsswitch "hosts" entry, any hostname must be represented as a
fully qualified DNS name. Currently HP-UX will attempt to match a non-fully qualified
hostname; this HP-only feature will be obsoleted in a later release of HP-UX.
access=[access_list ][:access_list ]...
Give mount access to each access_list listed. See the "access_list" subsection below. An
empty access= list allows all machines to mount the specified mount point.
access_list
The access_list argument is a colon-separated list whose components may be any
number of the following:
hostname
The name of a host. With a server configured for DNS naming in the nsswitch
"hosts" entry, any hostname must be represented as a fully qualified DNS
name. Currently HP-UX will allow a match for a non-fully qualified
HP-UX 11i Version 2: September 2004 − 1 − Hewlett-Packard Company Section 4−−49