File apparmor_namespacesem.patch of Package kernel
From: tonyj@suse.de
Subject: Export namespace semaphore
Patch-mainline: no
Export global namespace_sem (this used to be a per namespace semaphore).
Alas, this isn't going to win _any_ points for style.
Patch is not in mainline -- pending AppArmor code submission to lkml
---
fs/namespace.c | 3 ++-
include/linux/namespace.h | 3 +++
2 files changed, 5 insertions(+), 1 deletion(-)
--- linux-2.6.18.orig/fs/namespace.c
+++ linux-2.6.18/fs/namespace.c
@@ -45,7 +45,8 @@ static int event;
static struct list_head *mount_hashtable __read_mostly;
static int hash_mask __read_mostly, hash_bits __read_mostly;
static kmem_cache_t *mnt_cache __read_mostly;
-static struct rw_semaphore namespace_sem;
+struct rw_semaphore namespace_sem;
+EXPORT_SYMBOL_GPL(namespace_sem);
/* /sys/fs */
decl_subsys(fs, NULL, NULL);
--- linux-2.6.18.orig/include/linux/namespace.h
+++ linux-2.6.18/include/linux/namespace.h
@@ -5,6 +5,9 @@
#include <linux/mount.h>
#include <linux/sched.h>
+/* exported for AppArmor (SubDomain) */
+extern struct rw_semaphore namespace_sem;
+
struct namespace {
atomic_t count;
struct vfsmount * root;