NFSD: Update the NFSv2 GETACL result encoder to use struct xdr_stream

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

1 files changed, 16 insertions, 26 deletions

diff --git a/fs/nfsd/nfs2acl.c b/fs/nfsd/nfs2acl.c
index 855e17772eba..4a15ae6fdbc2 100644
--- a/fs/nfsd/nfs2acl.c
+++ b/fs/nfsd/nfs2acl.c
@@ -242,51 +242,41 @@ static int nfsaclsvc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p)
 /* GETACL */
 static int nfsaclsvc_encode_getaclres(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct xdr_stream *xdr = &rqstp->rq_res_stream;
 	struct nfsd3_getaclres *resp = rqstp->rq_resp;
 	struct dentry *dentry = resp->fh.fh_dentry;
 	struct inode *inode;
-	struct kvec *head = rqstp->rq_res.head;
-	unsigned int base;
-	int n;
 	int w;
 
-	*p++ = resp->status;
-	if (resp->status != nfs_ok)
-		return xdr_ressize_check(rqstp, p);
+	if (!svcxdr_encode_stat(xdr, resp->status))
+		return 0;
 
-	/*
-	 * Since this is version 2, the check for nfserr in
-	 * nfsd_dispatch actually ensures the following cannot happen.
-	 * However, it seems fragile to depend on that.
-	 */
 	if (dentry == NULL || d_really_is_negative(dentry))
-		return 0;
+		return 1;
 	inode = d_inode(dentry);
 
-	p = nfs2svc_encode_fattr(rqstp, p, &resp->fh, &resp->stat);
-	*p++ = htonl(resp->mask);
-	if (!xdr_ressize_check(rqstp, p))
+	if (!svcxdr_encode_fattr(rqstp, xdr, &resp->fh, &resp->stat))
+		return 0;
+	if (xdr_stream_encode_u32(xdr, resp->mask) < 0)
 		return 0;
-	base = (char *)p - (char *)head->iov_base;
 
 	rqstp->rq_res.page_len = w = nfsacl_size(
 		(resp->mask & NFS_ACL)   ? resp->acl_access  : NULL,
 		(resp->mask & NFS_DFACL) ? resp->acl_default : NULL);
 	while (w > 0) {
 		if (!*(rqstp->rq_next_page++))
-			return 0;
+			return 1;
 		w -= PAGE_SIZE;
 	}
 
-	n = nfsacl_encode(&rqstp->rq_res, base, inode,
-			  resp->acl_access,
-			  resp->mask & NFS_ACL, 0);
-	if (n > 0)
-		n = nfsacl_encode(&rqstp->rq_res, base + n, inode,
-				  resp->acl_default,
-				  resp->mask & NFS_DFACL,
-				  NFS_ACL_DEFAULT);
-	return (n > 0);
+	if (!nfs_stream_encode_acl(xdr, inode, resp->acl_access,
+				   resp->mask & NFS_ACL, 0))
+		return 0;
+	if (!nfs_stream_encode_acl(xdr, inode, resp->acl_default,
+				   resp->mask & NFS_DFACL, NFS_ACL_DEFAULT))
+		return 0;
+
+	return 1;
 }
 
 static int nfsaclsvc_encode_attrstatres(struct svc_rqst *rqstp, __be32 *p)