seitan: add return action

The return action return a value to the target.

Signed-off-by: Alice Frosi <afrosi@redhat.com>

2 files changed, 9 insertions, 0 deletions

diff --git a/actions.c b/actions.c
index b1d3791..946d9fc 100644
--- a/actions.c
+++ b/actions.c
@@ -193,6 +193,14 @@ int do_actions(struct action actions[], unsigned int n_actions, int pid,
 			if (send_target(&resp, notifyfd) == -1)
 				return -1;
 			break;
+		case A_RETURN:
+			resp.id = id;
+			resp.flags = 0;
+			resp.error = 0;
+			resp.val = actions[i].ret.value;
+			if (send_target(&resp, notifyfd) == -1)
+				return -1;
+			break;
 		default:
 			fprintf(stderr, "unknow action %d \n", actions[i].type);
 		}
diff --git a/gluten.h b/gluten.h
index b20cab6..85254e9 100644
--- a/gluten.h
+++ b/gluten.h
@@ -49,6 +49,7 @@ enum action_type {
 	A_CONT,
 	A_INJECT,
 	A_INJECT_A,
+	A_RETURN,
 };
 
 struct act_call {