Add support for initializing pipes with specific permissions

pipe_io_server/pipe.py

@@ -1,4 +1,4 @@
-from os import mkfifo, remove
+from os import mkfifo, remove, chmod
 from os.path import exists
 
 
@@ -6,13 +6,11 @@ class Pipe:
     def __init__(self, path):
         self.path = path
 
-    def recreate(self):
+    def recreate(self, permissions):
         self.remove()
-        self.create()
+        mkfifo(self.path)
+        chmod(self.path, permissions)
 
     def remove(self):
         if exists(self.path):
             remove(self.path)
-
-    def create(self):
-        mkfifo(self.path)

pipe_io_server/pipe_io_server.py

@@ -8,17 +8,17 @@ from .terminate_process_on_failure import terminate_process_on_failure
 
 
 class PipeIOServer(ABC, Thread):
-    def __init__(self, in_pipe=None, out_pipe=None):
+    def __init__(self, in_pipe=None, out_pipe=None, permissions=0o700):
         super().__init__()
         self._in_pipe, self._out_pipe = in_pipe, out_pipe
-        self._create_pipes()
+        self._create_pipes(permissions)
         self._stop_event = Event()
         self._reader_thread, self._writer_thread = self._create_io_threads()
         self._io_threads = (self._reader_thread, self._writer_thread)
 
-    def _create_pipes(self):
-        Pipe(self.in_pipe).recreate()
-        Pipe(self.out_pipe).recreate()
+    def _create_pipes(self, permissions):
+        Pipe(self.in_pipe).recreate(permissions)
+        Pipe(self.out_pipe).recreate(permissions)
 
     @property
     def in_pipe(self):