From: Jeff Layton <jlayton@kernel.org>
Date: Wed, 24 Jul 2019 12:46:20 -0400
Subject: ceph: don't list vxattrs in listxattr()
Git-commit: e09580b343aa117fd07c1bb7f7dfc5bc630a2953
Patch-mainline: v5.4-rc1
References: jsc#SES-1134

Most filesystems that provide virtual xattrs (e.g. CIFS) don't display
them via listxattr(). Ceph does, and that causes some of the tests in
xfstests to fail.

Have cephfs stop listing vxattrs in listxattr. Userspace can always
query them directly when the name is known.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Acked-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Acked-by: Luis Henriques <lhenriques@suse.com>
---
 fs/ceph/xattr.c | 29 -----------------------------
 1 file changed, 29 deletions(-)

diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index 939eab7aa219..2fba06b50f25 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -903,11 +903,9 @@ ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size)
 {
 	struct inode *inode = d_inode(dentry);
 	struct ceph_inode_info *ci = ceph_inode(inode);
-	struct ceph_vxattr *vxattrs = ceph_inode_vxattrs(inode);
 	bool len_only = (size == 0);
 	u32 namelen;
 	int err;
-	int i;
 
 	spin_lock(&ci->i_ceph_lock);
 	dout("listxattr %p ver=%lld index_ver=%lld\n", inode,
@@ -936,33 +934,6 @@ ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size)
 		names = __copy_xattr_names(ci, names);
 		size -= namelen;
 	}
-
-
-	/* virtual xattr names, too */
-	if (vxattrs) {
-		for (i = 0; vxattrs[i].name; i++) {
-			size_t this_len;
-
-			if (vxattrs[i].flags & VXATTR_FLAG_HIDDEN)
-				continue;
-			if (vxattrs[i].exists_cb && !vxattrs[i].exists_cb(ci))
-				continue;
-
-			this_len = strlen(vxattrs[i].name) + 1;
-			namelen += this_len;
-			if (len_only)
-				continue;
-
-			if (this_len > size) {
-				err = -ERANGE;
-				goto out;
-			}
-
-			memcpy(names, vxattrs[i].name, this_len);
-			names += this_len;
-			size -= this_len;
-		}
-	}
 	err = namelen;
 out:
 	spin_unlock(&ci->i_ceph_lock);