From e517a0cd859ae0c4d9451107113fc2b076456f8f Mon Sep 17 00:00:00 2001
From: Stephen Smalley <sds@tycho.nsa.gov>
Date: Tue, 8 Nov 2005 21:34:32 -0800
Subject: [PATCH] [PATCH] selinux: MLS compatibility
This patch enables files created on a MLS-enabled SELinux system to be
accessible on a non-MLS SELinux system, by skipping the MLS component of
the security context in the non-MLS case.
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
security/selinux/ss/mls.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/security/selinux/ss/mls.c b/security/selinux/ss/mls.c
index aaefac2921f1..640d0bfdbc68 100644
--- a/security/selinux/ss/mls.c
+++ b/security/selinux/ss/mls.c
@@ -262,8 +262,11 @@ int mls_context_to_sid(char oldc,
struct cat_datum *catdatum, *rngdatum;
int l, rc = -EINVAL;
- if (!selinux_mls_enabled)
+ if (!selinux_mls_enabled) {
+ if (def_sid != SECSID_NULL && oldc)
+ *scontext += strlen(*scontext);
return 0;
+ }
/*
* No MLS component to the security context, try and map to