Date: Tue, 12 Jul 2011 14:04:36 +0000 (UTC) From: Rick Macklem <rmacklem@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r223954 - head/usr.sbin/mountd Message-ID: <201107121404.p6CE4aYR041888@svn.freebsd.org>
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Author: rmacklem Date: Tue Jul 12 14:04:36 2011 New Revision: 223954 URL: http://svn.freebsd.org/changeset/base/223954 Log: Try and fix the exports.5 man page so that it clarifies how NFSv4 exports are handled. Improved by informal review comments from mckusick, kudak at mit.edu and bde. This is a content change. MFC after: 2 weeks Modified: head/usr.sbin/mountd/exports.5 Modified: head/usr.sbin/mountd/exports.5 ============================================================================== --- head/usr.sbin/mountd/exports.5 Tue Jul 12 13:46:13 2011 (r223953) +++ head/usr.sbin/mountd/exports.5 Tue Jul 12 14:04:36 2011 (r223954) @@ -28,7 +28,7 @@ .\" @(#)exports.5 8.3 (Berkeley) 3/29/95 .\" $FreeBSD$ .\" -.Dd December 3, 2009 +.Dd July 12, 2011 .Dt EXPORTS 5 .Os .Sh NAME @@ -72,6 +72,13 @@ that can be mounted on by the correspond There are three forms of this specification. The first is to list all mount points as absolute directory paths separated by whitespace. +This list of directory paths should be considered an +.Dq administrative control , +since it is only enforced by the +.Xr mountd 8 +daemon and not the kernel. +As such, it only applies to NFSv2 and NFSv3 mounts and only +with respect to the client's use of the mount protocol. The second is to specify the pathname of the root of the file system followed by the .Fl alldirs @@ -81,8 +88,21 @@ including regular files if the .Fl r option is used on .Xr mountd 8 . +Because NFSv4 does not use the mount protocol, +the +.Dq administrative controls +are not applied. +Thus, all the above export line(s) should be considered to have the +.Fl alldirs +flag, even if the line is specified without it. The third form has the string ``V4:'' followed by a single absolute path name, to specify the NFSv4 tree root. +This line does not export any file system, but simply marks where the root +of the server's directory tree is for NFSv4 clients. +The exported file systems for NFSv4 are specified via the other lines +in the +.Xr exports 5 +file in the same way as for NFSv2 and NFSv3. The pathnames must not have any symbolic links in them and should not have any .Dq Pa \&.
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