NFSD: Update the NFSv3 PATHCONF3res encoder to use struct xdr_stream

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index 514f53ad730204f3ba756fa4fbc76935b5b951ed..1467bba02e180e59f19fbcf7677bf14e5edf501a 100644 (file)
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -1501,25 +1501,47 @@ nfs3svc_encode_fsinfores(struct svc_rqst *rqstp, __be32 *p)
        return 1;
 }
 
+static bool
+svcxdr_encode_pathconf3resok(struct xdr_stream *xdr,
+                            const struct nfsd3_pathconfres *resp)
+{
+       __be32 *p;
+
+       p = xdr_reserve_space(xdr, XDR_UNIT * 6);
+       if (!p)
+               return false;
+       *p++ = cpu_to_be32(resp->p_link_max);
+       *p++ = cpu_to_be32(resp->p_name_max);
+       p = xdr_encode_bool(p, resp->p_no_trunc);
+       p = xdr_encode_bool(p, resp->p_chown_restricted);
+       p = xdr_encode_bool(p, resp->p_case_insensitive);
+       xdr_encode_bool(p, resp->p_case_preserving);
+
+       return true;
+}
+
 /* PATHCONF */
 int
 nfs3svc_encode_pathconfres(struct svc_rqst *rqstp, __be32 *p)
 {
+       struct xdr_stream *xdr = &rqstp->rq_res_stream;
        struct nfsd3_pathconfres *resp = rqstp->rq_resp;
 
-       *p++ = resp->status;
-       *p++ = xdr_zero;        /* no post_op_attr */
-
-       if (resp->status == 0) {
-               *p++ = htonl(resp->p_link_max);
-               *p++ = htonl(resp->p_name_max);
-               *p++ = htonl(resp->p_no_trunc);
-               *p++ = htonl(resp->p_chown_restricted);
-               *p++ = htonl(resp->p_case_insensitive);
-               *p++ = htonl(resp->p_case_preserving);
+       if (!svcxdr_encode_nfsstat3(xdr, resp->status))
+               return 0;
+       switch (resp->status) {
+       case nfs_ok:
+               if (!svcxdr_encode_post_op_attr(rqstp, xdr, &nfs3svc_null_fh))
+                       return 0;
+               if (!svcxdr_encode_pathconf3resok(xdr, resp))
+                       return 0;
+               break;
+       default:
+               if (!svcxdr_encode_post_op_attr(rqstp, xdr, &nfs3svc_null_fh))
+                       return 0;
        }
 
-       return xdr_ressize_check(rqstp, p);
+       return 1;
 }
 
 /* COMMIT */

diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index 9dda7171b7b49df6659f23abf429e461af0a1a2e..a965cbc136adddc6de0a8aa97c496c9a390de146 100644 (file)
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -395,7 +395,21 @@ static inline int xdr_stream_encode_item_absent(struct xdr_stream *xdr)
 }
 
 /**
- * xdr_stream_encode_bool - Encode a "not present" list item
+ * xdr_encode_bool - Encode a boolean item
+ * @p: address in a buffer into which to encode
+ * @n: boolean value to encode
+ *
+ * Return value:
+ *   Address of item following the encoded boolean
+ */
+static inline __be32 *xdr_encode_bool(__be32 *p, u32 n)
+{
+       *p = n ? xdr_one : xdr_zero;
+       return p++;
+}
+
+/**
+ * xdr_stream_encode_bool - Encode a boolean item
  * @xdr: pointer to xdr_stream
  * @n: boolean value to encode
  *
@@ -410,7 +424,7 @@ static inline int xdr_stream_encode_bool(struct xdr_stream *xdr, __u32 n)
 
        if (unlikely(!p))
                return -EMSGSIZE;
-       *p = n ? xdr_one : xdr_zero;
+       xdr_encode_bool(p, n);
        return len;
 }