Author: rmacklem
Date: Sat Apr 23 21:18:45 2016
New Revision: 298523
URL: https://svnweb.freebsd.org/changeset/base/298523

Log:
  Allow the NFSv4 server to reply NFSERR_WRONGSEC for the SetClientID operation.
  
  It was reported via email that a Linux client couldn't do a Kerberized
  NFS mount when only "sec=krb5" was specified for the exports. The Linux
  client attempted a mount via krb5i and the server replied NFSERR_SERVERFAULT.
  Although NFSERR_WRONGSEC isn't listed as an error for SetClientID, I
  think it is the correct reply, so this patch enables that.
  I do not know if this fixes the mount attempt, but adding "krb5i" to the
  list of allowed security flavours does allow the mount to work.
  
  Reported by:  j...@spectralogic.com
  MFC after:    2 weeks

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

Modified: head/sys/fs/nfsserver/nfs_nfsdsubs.c
==============================================================================
--- head/sys/fs/nfsserver/nfs_nfsdsubs.c        Sat Apr 23 20:45:52 2016        
(r298522)
+++ head/sys/fs/nfsserver/nfs_nfsdsubs.c        Sat Apr 23 21:18:45 2016        
(r298523)
@@ -1144,6 +1144,7 @@ static short nfsv4err_setclientid[] = {
        NFSERR_INVAL,
        NFSERR_RESOURCE,
        NFSERR_SERVERFAULT,
+       NFSERR_WRONGSEC,
        0,
 };
 
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