1 files changed, 12 insertions, 0 deletions

diff --git a/include/linux/key.h b/include/linux/key.h
index 4d189e51bc6c..cbf464ad9589 100644
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -177,6 +177,8 @@ struct key {
 /*
  * kernel managed key type definition
  */
+typedef int (*request_key_actor_t)(struct key *key, struct key *authkey, const char *op);
+
 struct key_type {
         /* name of the type */
         const char *name;
@@ -218,6 +220,16 @@ struct key_type {
          */
         long (*read)(const struct key *key, char __user *buffer, size_t buflen);
 
+        /* handle request_key() for this type instead of invoking
+         * /sbin/request-key (optional)
+         * - key is the key to instantiate
+         * - authkey is the authority to assume when instantiating this key
+         * - op is the operation to be done, usually "create"
+         * - the call must not return until the instantiation process has run
+         *   its course
+         */
+        request_key_actor_t request_key;
+
         /* internal fields */
         struct list_head        link;           /* link in types list */
 };