Re: [PATCH 2/2] mount.nfs: Assume v2/v3 if mount-related options are present

[Steve Dickson <SteveD@redhat.com>]

On 10/08/2009 01:37 PM, Chuck Lever wrote:
> Don't try NFSv4 if any MNT protocol related options were presented by
> the user.
> 
> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
> ---
> 
>  utils/mount/stropts.c |    7 +++++++
>  1 files changed, 7 insertions(+), 0 deletions(-)
> 
> diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c
> index 0685caa..3401f63 100644
> --- a/utils/mount/stropts.c
> +++ b/utils/mount/stropts.c
> @@ -564,6 +564,13 @@ static int nfs_try_mount_v4(struct nfsmount_info *mi)
>  	}
>  
>  	if (mi->version == 0) {
> +		if (po_contains(options, "mounthost") ||
> +		    po_contains(options, "mountaddr") ||
> +		    po_contains(options, "mountvers") ||
> +		    po_contains(options, "mountproto")) {
> +			errno = EPROTONOSUPPORT;
> +			goto out_fail;
> +		}
I think it make senses to assume the version negation should 
start version 3 when  mountXXXX options exist instead of 
failing a mount they probably didn't want.. 

steved.