[Devel] [PATCH 2/2] Explicitly set pgid and sid of init

[sukadev at us.ibm.com]

From: Sukadev Bhattiprolu <sukadev at us.ibm.com>
Subject: [PATCH 2/2] Explicitly set pgid and sid of init

Explicitly set pgid and sid of init process to 1.

Signed-off-by: Sukadev Bhattiprolu <sukadev at us.ibm.com>
Cc: Cedric Le Goater <clg at fr.ibm.com>
Cc: Dave Hansen <haveblue at us.ibm.com>
Cc: Serge Hallyn <serue at us.ibm.com>
Cc: Eric Biederman <ebiederm at xmission.com>
Cc: containers at lists.osdl.org
---
 init/main.c   |    1 +
 kernel/exit.c |    4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

Index: lx26-20-mm2/init/main.c
===================================================================
--- lx26-20-mm2.orig/init/main.c	2007-02-21 14:31:26.000000000 -0800
+++ lx26-20-mm2/init/main.c	2007-02-21 15:34:06.000000000 -0800
@@ -791,6 +791,7 @@ static int __init init(void * unused)
 	 */
 	init_pid_ns.child_reaper = current;
 
+	__set_special_pids(1, 1);
 	cad_pid = task_pid(current);
 
 	smp_prepare_cpus(max_cpus);
Index: lx26-20-mm2/kernel/exit.c
===================================================================
--- lx26-20-mm2.orig/kernel/exit.c	2007-02-21 15:33:57.000000000 -0800
+++ lx26-20-mm2/kernel/exit.c	2007-02-21 15:34:06.000000000 -0800
@@ -296,12 +296,12 @@ void __set_special_pids(pid_t session, p
 {
 	struct task_struct *curr = current->group_leader;
 
-	if (process_session(curr) != session) {
+	if (pid_nr(task_session(curr)) != session) {
 		detach_pid(curr, PIDTYPE_SID);
 		set_signal_session(curr->signal, session);
 		attach_pid(curr, PIDTYPE_SID, find_pid(session));
 	}
-	if (process_group(curr) != pgrp) {
+	if (pid_nr(task_pgrp(curr)) != pgrp) {
 		detach_pid(curr, PIDTYPE_PGID);
 		curr->signal->pgrp = pgrp;
 		attach_pid(curr, PIDTYPE_PGID, find_pid(pgrp));
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