From: Anna Schumaker <Anna.Schumaker@Netapp.com>
Date: Wed, 21 Sep 2022 17:21:52 +0000 (-0400)
Subject: NFSv4.2: Add special handling for LISTXATTR receiving NFS4ERR_NOXATTR
X-Git-Tag: v6.1-rc1~38^2~15
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=963694615d9d5a860e6571da18e50f14ab3583b3;p=thirdparty%2Fkernel%2Flinux.git

NFSv4.2: Add special handling for LISTXATTR receiving NFS4ERR_NOXATTR

We can translate this into an empty response list instead of passing an
error up to userspace.

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
---

diff --git a/fs/nfs/nfs42xdr.c b/fs/nfs/nfs42xdr.c
index b56f05113d367..fe1aeb0f048f2 100644
--- a/fs/nfs/nfs42xdr.c
+++ b/fs/nfs/nfs42xdr.c
@@ -569,6 +569,14 @@ static int decode_listxattrs(struct xdr_stream *xdr,
 		 */
 		if (status == -ETOOSMALL)
 			status = -ERANGE;
+		/*
+		 * Special case: for LISTXATTRS, NFS4ERR_NOXATTR
+		 * should be translated to success with zero-length reply.
+		 */
+		if (status == -ENODATA) {
+			res->eof = true;
+			status = 0;
+		}
 		goto out;
 	}