mgr/nfs: add a helper to validate cephfs path

Fixes: https://tracker.ceph.com/issues/62077
Signed-off-by: Dhairya Parmar <dparmar@redhat.com>

diff --git a/src/pybind/mgr/nfs/export.py b/src/pybind/mgr/nfs/export.py
index 2d07cd6eab607808bf4403edc56c43c271cc71d3..ed3bc1be3a4478252eee29ef46330d5340a3431a 100644 (file)
--- a/src/pybind/mgr/nfs/export.py
+++ b/src/pybind/mgr/nfs/export.py
@@ -71,6 +71,17 @@ def normalize_path(path: str) -> str:
     return path
 
 
+def validate_cephfs_path(mgr: 'Module', fs_name: str, path: str) -> None:
+    try:
+        cephfs_path_is_dir(mgr, fs_name, path)
+    except NotADirectoryError:
+        raise NFSException(f"path {path} is not a dir", -errno.ENOTDIR)
+    except cephfs.ObjectNotFound:
+        raise NFSObjectNotFound(f"path {path} does not exist")
+    except cephfs.Error as e:
+        raise NFSException(e.args[1], -e.args[0])
+
+
 class NFSRados:
     def __init__(self, rados: 'Rados', namespace: str) -> None:
         self.rados = rados