connection: handle KDBUS_MSG_SIGNAL

Add missed hunks for handling KDBUS_MSG_SIGNAL.

Signed-off-by: Daniel Mack <daniel@zonque.org>

diff --git a/connection.c b/connection.c
index 5879833..8c2e7d8 100644 (file)
--- a/connection.c
+++ b/connection.c
@@ -989,8 +989,8 @@ int kdbus_cmd_msg_send(struct kdbus_conn *conn_src,
                        goto exit_unref;
 
                if (msg->flags & KDBUS_MSG_EXPECT_REPLY) {
-                       ret = kdbus_conn_check_access(conn_src, conn_dst, msg,
-                                                     NULL);
+                       ret = kdbus_conn_check_access(conn_src, conn_dst,
+                                                     msg, NULL);
                        if (ret < 0)
                                goto exit_unref;
 
@@ -1000,9 +1000,20 @@ int kdbus_cmd_msg_send(struct kdbus_conn *conn_src,
                                ret = PTR_ERR(reply_wait);
                                goto exit_unref;
                        }
+               } else if (msg->flags & KDBUS_MSG_SIGNAL) {
+                       ret = kdbus_conn_check_access(conn_dst, conn_src,
+                                                     msg, NULL);
+                       if (ret < 0)
+                               goto exit_unref;
+
+                       if (!kdbus_match_db_match_kmsg(conn_dst->match_db,
+                                                      conn_src, kmsg)) {
+                               ret = -EPERM;
+                               goto exit_unref;
+                       }
                } else {
-                       ret = kdbus_conn_check_access(conn_src, conn_dst, msg,
-                                                     &reply_wake);
+                       ret = kdbus_conn_check_access(conn_src, conn_dst,
+                                                     msg, &reply_wake);
                        if (ret < 0)
                                goto exit_unref;
                }