[PATCH] selinux: enable configuration of max policy version

Enable configuration of SELinux maximum supported policy version to support
legacy userland (init) that does not gracefully handle kernels that support
newer policy versions two or more beyond the installed policy, as in FC3
and FC4.

[bunk@stusta.de: improve Kconfig help text]
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: James Morris <jmorris@namei.org>
Acked-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 5 insertions, 1 deletions

diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h
index 911954a692fa..aa21ca1721af 100644
--- a/security/selinux/include/security.h
+++ b/security/selinux/include/security.h
@@ -27,7 +27,11 @@
 
 /* Range of policy versions we understand*/
 #define POLICYDB_VERSION_MIN   POLICYDB_VERSION_BASE
-#define POLICYDB_VERSION_MAX   POLICYDB_VERSION_AVTAB
+#ifdef CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX
+#define POLICYDB_VERSION_MAX    CONFIG_SECURITY_SELINUX_POLICYDB_VERSION_MAX_VALUE
+#else
+#define POLICYDB_VERSION_MAX    POLICYDB_VERSION_AVTAB
+#endif
 
 extern int selinux_enabled;
 extern int selinux_mls_enabled;