libsystemd-bus: rename to libsystemd

[elogind.git] / src / libsystemd / bus-kernel.h

diff --git a/src/libsystemd/bus-kernel.h b/src/libsystemd/bus-kernel.h
new file mode 100644 (file)
index 0000000..2aba0bb
--- /dev/null
+++ b/src/libsystemd/bus-kernel.h
@@ -0,0 +1,81 @@
+/*-*- 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/>.
+***/
+
+#include <stdbool.h>
+
+#include "sd-bus.h"
+
+#define KDBUS_ITEM_NEXT(item) \
+        (typeof(item))(((uint8_t *)item) + ALIGN8((item)->size))
+
+#define KDBUS_ITEM_FOREACH(part, head, first)                           \
+        for (part = (head)->first;                                      \
+             (uint8_t *)(part) < (uint8_t *)(head) + (head)->size;      \
+             part = KDBUS_ITEM_NEXT(part))
+
+#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
+#define KDBUS_ITEM_SIZE(s) ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
+
+#define MEMFD_CACHE_MAX 32
+
+/* When we cache a memfd block for reuse, we will truncate blocks
+ * longer than this in order not to keep too much data around. */
+#define MEMFD_CACHE_ITEM_SIZE_MAX (128*1024)
+
+/* This determines at which minimum size we prefer sending memfds over
+ * sending vectors */
+#define MEMFD_MIN_SIZE (128*1024)
+
+/* The size of the per-connection memory pool that we set up and where
+ * the kernel places our incoming messages */
+#define KDBUS_POOL_SIZE (16*1024*1024)
+
+struct memfd_cache {
+        int fd;
+        void *address;
+        size_t mapped;
+        size_t allocated;
+};
+
+int bus_kernel_connect(sd_bus *b);
+int bus_kernel_take_fd(sd_bus *b);
+
+int bus_kernel_write_message(sd_bus *bus, sd_bus_message *m);
+int bus_kernel_read_message(sd_bus *bus);
+
+int bus_kernel_create_bus(const char *name, bool world, char **s);
+int bus_kernel_create_namespace(const char *name, char **s);
+int bus_kernel_create_starter(const char *bus, const char *name);
+int bus_kernel_create_monitor(const char *bus);
+
+int bus_kernel_pop_memfd(sd_bus *bus, void **address, size_t *mapped, size_t *allocated);
+void bus_kernel_push_memfd(sd_bus *bus, int fd, void *address, size_t mapped, size_t allocated);
+
+void bus_kernel_flush_memfd(sd_bus *bus);
+
+int bus_kernel_parse_unique_name(const char *s, uint64_t *id);
+
+int kdbus_translate_request_name_flags(uint64_t sd_bus_flags, uint64_t *kdbus_flags);
+int kdbus_translate_attach_flags(uint64_t sd_bus_flags, uint64_t *kdbus_flags);
+
+int bus_kernel_try_close(sd_bus *bus);