netlabel: Changes to the NetLabel security attributes to allow LSMs to pass full contexts

This patch provides support for including the LSM's secid in addition to
the LSM's MLS information in the NetLabel security attributes structure.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Acked-by: James Morris <jmorris@namei.org>

include/net/netlabel.h

@@ -203,7 +203,7 @@ struct netlbl_lsm_secattr {
 	u32 type;
 	char *domain;
 	struct netlbl_lsm_cache *cache;
-	union {
+	struct {
 		struct {
 			struct netlbl_lsm_secattr_catmap *cat;
 			u32 lvl;

security/selinux/ss/services.c

@@ -2803,7 +2803,8 @@ int security_netlbl_sid_to_secattr(u32 sid, struct netlbl_lsm_secattr *secattr)
 		rc = -ENOMEM;
 		goto netlbl_sid_to_secattr_failure;
 	}
-	secattr->flags |= NETLBL_SECATTR_DOMAIN_CPY;
+	secattr->attr.secid = sid;
+	secattr->flags |= NETLBL_SECATTR_DOMAIN_CPY | NETLBL_SECATTR_SECID;
 	mls_export_netlbl_lvl(ctx, secattr);
 	rc = mls_export_netlbl_cat(ctx, secattr);
 	if (rc != 0)