X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/python-routefs.git/blobdiff_plain/e655b0b5c616a5e0732e68c2e2578f02ae4c84c5..28c8a7e679b0251974b1c21e582f65abac9babac:/routefs/__init__.py

diff --git a/routefs/__init__.py b/routefs/__init__.py
index 5137256..1abbf9a 100644
--- a/routefs/__init__.py
+++ b/routefs/__init__.py
@@ -83,7 +83,7 @@ class RouteFS(fuse.Fuse):
         """
         match = self.map.match(path)
         if match is None:
-            return
+            return NoEntry()
         controller = match.pop('controller')
         result = getattr(self, controller)(**match)
         if type(result) is str:
@@ -111,24 +111,7 @@ class RouteFS(fuse.Fuse):
         The stat information for a directory, symlink, or file is
         predetermined based on which it is.
         """
-        obj = self._get_file(path)
-        if obj is None:
-            return -errno.ENOENT
-        
-        st = RouteStat()
-        if type(obj) is Directory:
-            st.st_mode = stat.S_IFDIR | obj.mode
-            st.st_nlink = 2
-        elif type(obj) is Symlink:
-            st.st_mode = stat.S_IFLNK | obj.mode
-            st.st_nlink = 1
-            st.st_size = len(obj)
-        else:
-            st.st_mode = stat.S_IFREG | obj.mode
-            st.st_nlink = 1
-            st.st_size = len(obj)
-        
-        return st
+        return self._get_file(path).getattr()
     
     def read(self, path, length, offset):
         """
@@ -136,7 +119,7 @@ class RouteFS(fuse.Fuse):
         of the file
         """
         obj = self._get_file(path)
-        if obj is None:
+        if type(obj) is NoEntry:
             return -errno.ENOENT
         elif type(obj) in (Directory, Symlink):
             return -errno.EINVAL
@@ -148,12 +131,22 @@ class RouteFS(fuse.Fuse):
         If the path specified is a symlink, return the target
         """
         obj = self._get_file(path)
-        if type(obj) is not Symlink:
+        if obj is None:
+            return -errno.ENOENT
+        elif type(obj) is not Symlink:
             return -errno.EINVAL
         else:
             return obj
 
-class TreeEntry(object):
+class TreeKey(object):
+    def getattr(self):
+        return -errno.EINVAL
+
+class NoEntry(TreeKey):
+    def getattr(self):
+        return -errno.ENOENT
+
+class TreeEntry(TreeKey):
     default_mode = 0444
     
     def __new__(cls, contents, mode=None):
@@ -174,18 +167,38 @@ class Directory(TreeEntry, list):
     """
     default_mode = 0555
 
+    def getattr(self):
+        st = RouteStat()
+        st.st_mode = stat.S_IFDIR | self.mode
+        st.st_nlink = 2
+        return st
+
 class Symlink(TreeEntry, str):
     """
     A dummy class representing something that should be a symlink
     """
     default_mode = 0777
 
+    def getattr(self):
+        st = RouteStat()
+        st.st_mode = stat.S_IFLNK | self.mode
+        st.st_nlink = 1
+        st.st_size = len(self)
+        return st
+
 class File(TreeEntry, str):
     """
     A dummy class representing something that should be a file
     """
     default_mode = 0444
 
+    def getattr(self):
+        st = RouteStat()
+        st.st_mode = stat.S_IFREG | self.mode
+        st.st_nlink = 1
+        st.st_size = len(self)
+        return st
+
 def main(cls):
     """
     A convenience function for initializing a RouteFS filesystem
@@ -193,7 +206,7 @@ def main(cls):
     server = cls(version="%prog " + fuse.__version__,
                  usage=fuse.Fuse.fusage,
                  dash_s_do='setsingle')
-    server.parse(errex=1)
+    server.parse(values=server, errex=1)
     server.main()
 
 from dictfs import DictFS