NFSv4: A referral is assumed to always point to a directory.

Fix a bug whereby we would fail to create a mount point for a referral.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 8dde84b988d9..aa433d077945 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3678,6 +3678,19 @@ ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen)
         return len;
 }
 
+static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
+{
+        if (!((fattr->valid & NFS_ATTR_FATTR_FILEID) &&
+                (fattr->valid & NFS_ATTR_FATTR_FSID) &&
+                (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)))
+                return;
+
+        fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE |
+                NFS_ATTR_FATTR_NLINK;
+        fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO;
+        fattr->nlink = 2;
+}
+
 int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
                 struct nfs4_fs_locations *fs_locations, struct page *page)
 {
@@ -3704,6 +3717,7 @@ int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
         fs_locations->server = server;
         fs_locations->nlocations = 0;
         status = rpc_call_sync(server->client, &msg, 0);
+        nfs_fixup_referral_attributes(&fs_locations->fattr);
         dprintk("%s: returned status = %d\n", __func__, status);
         return status;
 }