1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/key.h b/include/linux/key.h
index ae1177302d70..abc68555bac3 100644
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -82,9 +82,16 @@ struct cred;
 
 struct key_type;
 struct key_owner;
+struct key_tag;
 struct keyring_list;
 struct keyring_name;
 
+struct key_tag {
+        struct rcu_head         rcu;
+        refcount_t              usage;
+        bool                    removed;        /* T when subject removed */
+};
+
 struct keyring_index_key {
         /* [!] If this structure is altered, the union in struct key must change too! */
         unsigned long           hash;                   /* Hash value */
@@ -101,6 +108,7 @@ struct keyring_index_key {
                 unsigned long x;
         };
         struct key_type         *type;
+        struct key_tag          *domain_tag;    /* Domain of operation */
         const char              *description;
 };
 
@@ -218,6 +226,7 @@ struct key {
                         unsigned long   hash;
                         unsigned long   len_desc;
                         struct key_type *type;          /* type of key */
+                        struct key_tag  *domain_tag;    /* Domain of operation */
                         char            *description;
                 };
         };
@@ -268,6 +277,7 @@ extern struct key *key_alloc(struct key_type *type,
 extern void key_revoke(struct key *key);
 extern void key_invalidate(struct key *key);
 extern void key_put(struct key *key);
+extern bool key_put_tag(struct key_tag *tag);
 
 static inline struct key *__key_get(struct key *key)
 {