Handle failed attempts to set the sticky bit

git-svn-id: http://svn.savannah.nongnu.org/svn/rdiff-backup@838 2b77aa54-bcbc-44c9-a7ec-4f6cf2b41109

trunk/rdiff-backup/CHANGELOG

 New in v1.1.13 (????/??/??)
 ---------------------------
 
+Gracefully handle situations where rdiff-backup tries to set the sticky
+bit on non-directory files on systems that don't support that action.
+Thanks to Jim Nasby for the bug report. (Andrew Ferguson)
+
 Prevent the extended filenames / UTF-8 test from raising an exception
 on broken CIFS configurations which transform some characters to '?'.
 Problem reported by Luca Cappe. (Andrew Ferguson)

trunk/rdiff-backup/rdiff_backup/rpath.py

@@ -829,7 +829,19 @@ class RPath(RORPath):
 
 	def chmod(self, permissions):
 		"""Wrapper around os.chmod"""
-		self.conn.os.chmod(self.path, permissions & Globals.permission_mask)
+		try:
+			self.conn.os.chmod(self.path, permissions & Globals.permission_mask)
+		except OSError, exc:
+			if exc[0] == errno.EFTYPE and not self.isdir():
+				# Some systems throw this error if try to set sticky bit
+				# on a non-directory. Remove sticky bit and try again.
+				log.Log("Unable to set permissions of %s to %o - trying again"
+						"without sticky bit (%o)" % (self.path, permissions,
+						permissions & 06777), 2)
+				self.conn.os.chmod(self.path, permissions
+											  & 06777 & Globals.permission_mask)
+			else:
+				raise
 		self.data['perms'] = permissions
 
 	def settime(self, accesstime, modtime):