EXPORTFS: handle NULL returns from fh_to_dentry()/fh_to_parent()

[safe/jmp/linux-2.6] / fs / exportfs / expfs.c

diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c
index 80246ba..890e018 100644 (file)
--- a/fs/exportfs/expfs.c
+++ b/fs/exportfs/expfs.c
@@ -367,6 +367,8 @@ struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid,
         * Try to get any dentry for the given file handle from the filesystem.
         */
        result = nop->fh_to_dentry(mnt->mnt_sb, fid, fh_len, fileid_type);
+       if (!result)
+               result = ERR_PTR(-ESTALE);
        if (IS_ERR(result))
                return result;
 
@@ -420,6 +422,8 @@ struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid,
 
                target_dir = nop->fh_to_parent(mnt->mnt_sb, fid,
                                fh_len, fileid_type);
+               if (!target_dir)
+                       goto err_result;
                err = PTR_ERR(target_dir);
                if (IS_ERR(target_dir))
                        goto err_result;