Author: rmacklem
Date: Sat Apr 25 00:58:24 2015
New Revision: 281962
URL: https://svnweb.freebsd.org/changeset/base/281962

Log:
  Fix the NFS server's handling of a bogus NFSv2 ROOT RPC.
  The ROOT RPC is deprecated in the NFSv2 RFC, RFC-1094
  and should never be used by a client.
  
  Tested by:    t...@freenet.de
  MFC after:    1 week

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

Modified: head/sys/fs/nfsserver/nfs_nfsdkrpc.c
==============================================================================
--- head/sys/fs/nfsserver/nfs_nfsdkrpc.c        Sat Apr 25 00:58:19 2015        
(r281961)
+++ head/sys/fs/nfsserver/nfs_nfsdkrpc.c        Sat Apr 25 00:58:24 2015        
(r281962)
@@ -117,7 +117,8 @@ nfssvc_program(struct svc_req *rqst, SVC
 
        memset(&nd, 0, sizeof(nd));
        if (rqst->rq_vers == NFS_VER2) {
-               if (rqst->rq_proc > NFSV2PROC_STATFS) {
+               if (rqst->rq_proc > NFSV2PROC_STATFS ||
+                   newnfs_nfsv3_procid[rqst->rq_proc] == NFSPROC_NOOP) {
                        svcerr_noproc(rqst);
                        svc_freereq(rqst);
                        goto out;
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