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>

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 8dde84b..aa433d0 100644 (file)
--- 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;
 }