1 files changed, 36 insertions, 4 deletions

diff --git a/security/selinux/include/security.h b/security/selinux/include/security.h
index ae840634e3c7..a39f9565d80b 100644
--- a/security/selinux/include/security.h
+++ b/security/selinux/include/security.h
@@ -69,7 +69,7 @@
 
 struct netlbl_lsm_secattr;
 
-extern int selinux_enabled;
+extern int selinux_enabled_boot;
 
 /* Policy capabilities */
 enum {
@@ -99,7 +99,9 @@ struct selinux_avc;
 struct selinux_ss;
 
 struct selinux_state {
+#ifdef CONFIG_SECURITY_SELINUX_DISABLE
 	bool disabled;
+#endif
 #ifdef CONFIG_SECURITY_SELINUX_DEVELOP
 	bool enforcing;
 #endif
@@ -108,22 +110,34 @@ struct selinux_state {
 	bool policycap[__POLICYDB_CAPABILITY_MAX];
 	struct selinux_avc *avc;
 	struct selinux_ss *ss;
-};
+} __randomize_layout;
 
 void selinux_ss_init(struct selinux_ss **ss);
 void selinux_avc_init(struct selinux_avc **avc);
 
 extern struct selinux_state selinux_state;
 
+static inline bool selinux_initialized(const struct selinux_state *state)
+{
+	/* do a synchronized load to avoid race conditions */
+	return smp_load_acquire(&state->initialized);
+}
+
+static inline void selinux_mark_initialized(struct selinux_state *state)
+{
+	/* do a synchronized write to avoid race conditions */
+	smp_store_release(&state->initialized, true);
+}
+
 #ifdef CONFIG_SECURITY_SELINUX_DEVELOP
 static inline bool enforcing_enabled(struct selinux_state *state)
 {
-	return state->enforcing;
+	return READ_ONCE(state->enforcing);
 }
 
 static inline void enforcing_set(struct selinux_state *state, bool value)
 {
-	state->enforcing = value;
+	WRITE_ONCE(state->enforcing, value);
 }
 #else
 static inline bool enforcing_enabled(struct selinux_state *state)
@@ -136,6 +150,23 @@ static inline void enforcing_set(struct selinux_state *state, bool value)
 }
 #endif
 
+#ifdef CONFIG_SECURITY_SELINUX_DISABLE
+static inline bool selinux_disabled(struct selinux_state *state)
+{
+	return READ_ONCE(state->disabled);
+}
+
+static inline void selinux_mark_disabled(struct selinux_state *state)
+{
+	WRITE_ONCE(state->disabled, true);
+}
+#else
+static inline bool selinux_disabled(struct selinux_state *state)
+{
+	return false;
+}
+#endif
+
 static inline bool selinux_policycap_netpeer(void)
 {
 	struct selinux_state *state = &selinux_state;
@@ -395,5 +426,6 @@ extern int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm);
 extern void avtab_cache_init(void);
 extern void ebitmap_cache_init(void);
 extern void hashtab_cache_init(void);
+extern int security_sidtab_hash_stats(struct selinux_state *state, char *page);
 
 #endif /* _SELINUX_SECURITY_H_ */