KEYS: Make the key matching functions return bool

Make the key matching functions pointed to by key_match_data::cmp return bool
rather than int.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
diff --git a/security/keys/internal.h b/security/keys/internal.h
index e66a16c..b8960c4 100644
--- a/security/keys/internal.h
+++ b/security/keys/internal.h
@@ -127,8 +127,8 @@
 	struct timespec		now;
 };
 
-extern int key_default_cmp(const struct key *key,
-			   const struct key_match_data *match_data);
+extern bool key_default_cmp(const struct key *key,
+			    const struct key_match_data *match_data);
 extern key_ref_t keyring_search_aux(key_ref_t keyring_ref,
 				    struct keyring_search_context *ctx);
 
@@ -150,8 +150,8 @@
 					struct key *dest_keyring,
 					unsigned long flags);
 
-extern int lookup_user_key_possessed(const struct key *key,
-				     const struct key_match_data *match_data);
+extern bool lookup_user_key_possessed(const struct key *key,
+				      const struct key_match_data *match_data);
 extern key_ref_t lookup_user_key(key_serial_t id, unsigned long flags,
 				 key_perm_t perm);
 #define KEY_LOOKUP_CREATE	0x01