[PATCH] NFS: Fix mode bits and nlink count for v4 referral dirs

[Ashish Sangwan]

Request for mode bits and nlink count in the nfs4_get_referral call
and if server returns them use them instead of hard coded values.

CC: sta...@vger.kernel.org
Signed-off-by: Ashish Sangwan <ashishsangw...@gmail.com>
---
 fs/nfs/nfs4proc.c | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 6e95c85fe395..efec05c5f535 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -266,7 +266,9 @@ const u32 nfs4_fs_locations_bitmap[3] = {
        | FATTR4_WORD0_FSID
        | FATTR4_WORD0_FILEID
        | FATTR4_WORD0_FS_LOCATIONS,
-       FATTR4_WORD1_OWNER
+       FATTR4_WORD1_MODE
+       | FATTR4_WORD1_NUMLINKS
+       | FATTR4_WORD1_OWNER
        | FATTR4_WORD1_OWNER_GROUP
        | FATTR4_WORD1_RAWDEV
        | FATTR4_WORD1_SPACE_USED
@@ -7594,16 +7596,28 @@ nfs4_listxattr_nfs4_user(struct inode *inode, char 
*list, size_t list_len)
  */
 static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
 {
+       bool fix_mode = true, fix_nlink = true;
+
        if (!(((fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID) ||
               (fattr->valid & NFS_ATTR_FATTR_FILEID)) &&
              (fattr->valid & NFS_ATTR_FATTR_FSID) &&
              (fattr->valid & NFS_ATTR_FATTR_V4_LOCATIONS)))
                return;
 
+       if (fattr->valid & NFS_ATTR_FATTR_MODE)
+               fix_mode = false;
+       if (fattr->valid & NFS_ATTR_FATTR_NLINK)
+               fix_nlink = false;
        fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
                NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_V4_REFERRAL;
-       fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
-       fattr->nlink = 2;
+
+       if (fix_mode)
+               fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
+       else
+               fattr->mode |= S_IFDIR;
+
+       if (fix_nlink)
+               fattr->nlink = 2;
 }
 
 static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir,
-- 
2.22.0