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From: Rick Macklem <rmacklem@FreeBSD.org>
Date: Sun, 24 May 2009 18:49:53 +0000 (UTC)
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Subject: svn commit: r192693 - head/sys/fs/nfsserver
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Author: rmacklem
Date: Sun May 24 18:49:53 2009
New Revision: 192693
URL: http://svn.freebsd.org/changeset/base/192693

Log:
  Fix the experimental NFSv4 server so that it handles the case
  where a client is not allowed NFSv4 access correctly. This
  restriction is specified in the "V4: ..." line(s) in
  /etc/exports.
  
  Approved by:	kib (mentor)

Modified:
  head/sys/fs/nfsserver/nfs_nfsdkrpc.c

Modified: head/sys/fs/nfsserver/nfs_nfsdkrpc.c
==============================================================================
--- head/sys/fs/nfsserver/nfs_nfsdkrpc.c	Sun May 24 18:35:53 2009	(r192692)
+++ head/sys/fs/nfsserver/nfs_nfsdkrpc.c	Sun May 24 18:49:53 2009	(r192693)
@@ -286,6 +286,8 @@ nfs_proc(struct nfsrv_descript *nd, u_in
 		cacherep = RC_DROPIT;
 	} else if (nd->nd_repstat) {
 		cacherep = RC_REPLY;
+		if ((nd->nd_flag & ND_NFSV4) == 0)
+			panic("nfs_repstat for nfsv2,3");
 	} else {
 		/*
 		 * For NFSv3, play it safe and assume that the client is
@@ -313,6 +315,9 @@ nfs_proc(struct nfsrv_descript *nd, u_in
 		else
 			cacherep = RC_REPLY;
 		*rpp = nfsrvd_updatecache(nd, so);
+	} else if (cacherep == RC_REPLY) {
+		/* Generate the error reply message for NFSv4 */
+		nfsrvd_dorpc(nd, isdgram, td);
 	}
 	return (cacherep);
 }