diff options
author | Tom Gundersen <teg@jklm.no> | 2014-01-13 17:30:51 +0100 |
---|---|---|
committer | Tom Gundersen <teg@jklm.no> | 2014-01-13 18:54:19 +0100 |
commit | 6bb648a16ae4a682ad4784412af706d2e6a3e4da (patch) | |
tree | 16e7919cb609b92e879aeeab95c70ce1fc2eb4e2 /src/libsystemd/bus-kernel.h | |
parent | 883b36908788361a8bb945ce884dc518da83b371 (diff) |
libsystemd-bus: rename to libsystemd
Documentation was updated to refer to either 'libsystemd' or 'sd-bus' in place
of libsystemd-bus.
Diffstat (limited to 'src/libsystemd/bus-kernel.h')
-rw-r--r-- | src/libsystemd/bus-kernel.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/src/libsystemd/bus-kernel.h b/src/libsystemd/bus-kernel.h new file mode 100644 index 0000000000..2aba0bbe0a --- /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); |