add item about pgrp

diff --git a/nptl/TODO-kernel b/nptl/TODO-kernel
index c199c9b..d8afec1 100644 (file)
--- a/nptl/TODO-kernel
+++ b/nptl/TODO-kernel
@@ -4,6 +4,8 @@
 
   + use UID/GID in access(2), chmod(2), chown(2), link(2)
 
+- pgrp & session are process properties
+
 - nice level is process property
 
 - process file creation mask (mkdir, mkfifo, open, creat) after umask call