[PATCH 10/13] nfsd: store export path in export

[Neil Brown]

On Friday September 1, bfields at fieldses.org wrote:
> From: J. Bruce Fields <bfields at fieldses.org>
> 
> Store the export path in the svc_export structure instead of storing only
> the dentry.  This will prevent the need for additional d_path calls to
> provide NFSv4 fs_locations support.
> 
> Signed-off-by: J. Bruce Fields <bfields at citi.umich.edu>
....
> @@ -428,6 +429,9 @@ static int svc_export_parse(struct cache
>  	exp.ex_client = dom;
>  	exp.ex_mnt = nd.mnt;
>  	exp.ex_dentry = nd.dentry;
> +	exp.ex_path = kstrdup(buf, GFP_KERNEL);
> +	if (!exp.ex_path)
> +		goto out;

'err' is 0 at this point.  Need to be set to -ENOMEM before the 'if'.
Fixed.

>  
>  	/* expiry */
>  	err = -EINVAL;
> @@ -473,6 +477,7 @@ static int svc_export_parse(struct cache
>  	else
>  		exp_put(expp);
>   out:
> + 	kfree(exp.ex_path);

exp.ex_path might be uninitialised at this point.
Fixed.


NeilBrown