Mac OS X Extended Attributes support. (Patch from Andrew Ferguson.)

git-svn-id: http://svn.savannah.nongnu.org/svn/rdiff-backup@760 2b77aa54-bcbc-44c9-a7ec-4f6cf2b41109

trunk/rdiff-backup/CHANGELOG

 New in v1.1.6 (????/??/??)
 --------------------------
 
+Mac OS X Extended Attributes support.  (Patch from Andrew Ferguson.)
+
 Preserve Mac OS X 'Creation Date' field across backups.  (Patch from Andrew
 Ferguson.)
 

trunk/rdiff-backup/rdiff_backup/eas_acls.py

@@ -64,8 +64,11 @@ class ExtendedAttributes:
 				return
 			raise
 		for attr in attr_list:
-			if not attr.startswith('user.'):
-				# Only preserve user extended attributes
+			if attr.startswith('system.'):
+				# Do not preserve system extended attributes
+				continue
+			if attr == 'com.apple.FinderInfo' or attr == 'come.apple.ResourceFork':
+				# FinderInfo and Resource Fork handled elsewhere
 				continue
 			try: self.attr_dict[attr] = rp.conn.xattr.getxattr(rp.path, attr)
 			except IOError, exc:
@@ -92,7 +95,14 @@ class ExtendedAttributes:
 		"""Write extended attributes to rpath rp"""
 		self.clear_rp(rp)
 		for (name, value) in self.attr_dict.iteritems():
+			try:
 				rp.conn.xattr.setxattr(rp.path, name, value)
+			except IOError, exc:
+				# Mac and Linux attributes have different namespaces, so
+				# fail gracefully if can't call setxattr
+				if exc[0] == errno.EOPNOTSUPP or exc[0] == errno.EACCES:
+					continue
+				else: raise
 
 	def get(self, name):
 		"""Return attribute attached to given name"""

trunk/rdiff-backup/rdiff_backup/rpath.py

@@ -165,13 +165,13 @@ def copy_attribs(rpin, rpout):
 	if Globals.change_ownership:
 		rpout.chown(*rpout.conn.user_group.map_rpath(rpin))
 	if rpin.issym(): return # symlinks don't have times or perms
+	if Globals.eas_write: rpout.write_ea(rpin.get_ea())
 	if (Globals.resource_forks_write and rpin.isreg() and
 		rpin.has_resource_fork()):
 		rpout.write_resource_fork(rpin.get_resource_fork())
 	if (Globals.carbonfile_write and rpin.isreg() and
 		rpin.has_carbonfile()):
 		rpout.write_carbonfile(rpin.get_carbonfile())
-	if Globals.eas_write: rpout.write_ea(rpin.get_ea())
 	rpout.chmod(rpin.getperms())
 	if Globals.acls_write: rpout.write_acl(rpin.get_acl())
 	if not rpin.isdev(): rpout.setmtime(rpin.getmtime())
@@ -188,13 +188,13 @@ def copy_attribs_inc(rpin, rpout):
 	check_for_files(rpin, rpout)
 	if Globals.change_ownership: apply(rpout.chown, rpin.getuidgid())
 	if rpin.issym(): return # symlinks don't have times or perms
+	if Globals.eas_write: rpout.write_ea(rpin.get_ea())
 	if (Globals.resource_forks_write and rpin.isreg() and
 		rpin.has_resource_fork() and rpout.isreg()):
 		rpout.write_resource_fork(rpin.get_resource_fork())
 	if (Globals.carbonfile_write and rpin.isreg() and
 		rpin.has_carbonfile() and rpout.isreg()):
 		rpout.write_carbonfile(rpin.get_carbonfile())
-	if Globals.eas_write: rpout.write_ea(rpin.get_ea())
 	if rpin.isdir() and not rpout.isdir():
 		rpout.chmod(rpin.getperms() & 0777)
 	else: rpout.chmod(rpin.getperms())