docs: add su(1) btmp logging

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/Documentation/TODO b/Documentation/TODO
index a646127c82504c522d7f2de18fd36f97f3f2f777..1e128c165a84b4a3fff47e634ffdb95a1d3127b7 100644 (file)
--- a/Documentation/TODO
+++ b/Documentation/TODO
@@ -1,6 +1,12 @@
 
  Note that items with (!) have high priority.
 
+su
+--
+ - log failed attempts to btmp and all attempts to lastlog if authentication by
+   password is required (pam_authenticate()).  See login.c for more details.
+   https://bugzilla.redhat.com/show_bug.cgi?id=866682
+
 lscpu
 -----
   - detect more hypervisors, see 'virt-what' shell script