bus: add .busname unit type to implement kdbus-style bus activation

1 files changed, 65 insertions, 0 deletions

diff --git a/src/core/busname.h b/src/core/busname.h
new file mode 100644
index 0000000000..6debd48551
--- /dev/null
+++ b/src/core/busname.h
@@ -0,0 +1,65 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+  This file is part of systemd.
+
+  Copyright 2013 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+typedef struct BusName BusName;
+
+#include "unit.h"
+
+typedef enum BusNameState {
+        BUSNAME_DEAD,
+        BUSNAME_LISTENING,
+        BUSNAME_RUNNING,
+        BUSNAME_FAILED,
+        _BUSNAME_STATE_MAX,
+        _BUSNAME_STATE_INVALID = -1
+} BusNameState;
+
+typedef enum BusNameResult {
+        BUSNAME_SUCCESS,
+        BUSNAME_FAILURE_RESOURCES,
+        BUSNAME_FAILURE_SERVICE_FAILED_PERMANENT,
+        _BUSNAME_RESULT_MAX,
+        _BUSNAME_RESULT_INVALID = -1
+} BusNameResult;
+
+struct BusName {
+        Unit meta;
+
+        char *name;
+        int starter_fd;
+
+        UnitRef service;
+
+        BusNameState state, deserialized_state;
+        BusNameResult result;
+
+        sd_event_source *event_source;
+};
+
+extern const UnitVTable busname_vtable;
+
+const char* busname_state_to_string(BusNameState i) _const_;
+BusNameState busname_state_from_string(const char *s) _pure_;
+
+const char* busname_result_to_string(BusNameResult i) _const_;
+BusNameResult busname_result_from_string(const char *s) _pure_;