fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / security / selinux / ss / context.h

diff --git a/security/selinux/ss/context.h b/security/selinux/ss/context.h
index 0562bac..2eee0da 100644 (file)
--- a/security/selinux/ss/context.h
+++ b/security/selinux/ss/context.h
@@ -55,6 +55,29 @@ out:
        return rc;
 }
 
+/*
+ * Sets both levels in the MLS range of 'dst' to the low level of 'src'.
+ */
+static inline int mls_context_cpy_low(struct context *dst, struct context *src)
+{
+       int rc;
+
+       if (!selinux_mls_enabled)
+               return 0;
+
+       dst->range.level[0].sens = src->range.level[0].sens;
+       rc = ebitmap_cpy(&dst->range.level[0].cat, &src->range.level[0].cat);
+       if (rc)
+               goto out;
+
+       dst->range.level[1].sens = src->range.level[0].sens;
+       rc = ebitmap_cpy(&dst->range.level[1].cat, &src->range.level[0].cat);
+       if (rc)
+               ebitmap_destroy(&dst->range.level[0].cat);
+out:
+       return rc;
+}
+
 static inline int mls_context_cmp(struct context *c1, struct context *c2)
 {
        if (!selinux_mls_enabled)