[AUDIT] add session id to audit messages

In order to correlate audit records to an individual login add a session
id.  This is incremented every time a user logs in and is included in
almost all messages which currently output the auid.  The field is
labeled ses=  or oses=

Signed-off-by: Eric Paris <eparis@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 5e2730389089..af6947e69b40 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1141,6 +1141,7 @@ struct task_struct {
         struct audit_context *audit_context;
 #ifdef CONFIG_AUDITSYSCALL
         uid_t loginuid;
+        unsigned int sessionid;
 #endif
         seccomp_t seccomp;