1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
6 This file is part of systemd.
8 Copyright 2013 Lennart Poettering
10 systemd is free software; you can redistribute it and/or modify it
11 under the terms of the GNU Lesser General Public License as published by
12 the Free Software Foundation; either version 2.1 of the License, or
13 (at your option) any later version.
15 systemd is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with systemd; If not, see <http://www.gnu.org/licenses/>.
30 struct bus_container {
40 _packed_ struct bus_header {
50 struct sd_bus_message {
53 uint32_t reply_serial;
56 const char *interface;
58 const char *destination;
60 const char *signature;
77 struct bus_header *header;
86 struct bus_container root_container, *containers;
87 unsigned n_containers;
89 struct iovec iovec[4];
92 char *peeked_signature;
95 #if __BYTE_ORDER == __BIG_ENDIAN
96 #define BUS_MESSAGE_NEED_BSWAP(m) ((m)->header->endian != SD_BUS_BIG_ENDIAN)
98 #define BUS_MESSAGE_NEED_BSWAP(m) ((m)->header->endian != SD_BUS_LITTLE_ENDIAN)
101 static inline uint16_t BUS_MESSAGE_BSWAP16(sd_bus_message *m, uint16_t u) {
102 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_16(u) : u;
105 static inline uint32_t BUS_MESSAGE_BSWAP32(sd_bus_message *m, uint32_t u) {
106 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_32(u) : u;
109 static inline uint64_t BUS_MESSAGE_BSWAP64(sd_bus_message *m, uint64_t u) {
110 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_64(u) : u;
113 static inline uint32_t BUS_MESSAGE_SERIAL(sd_bus_message *m) {
114 return BUS_MESSAGE_BSWAP32(m, m->header->serial);
117 static inline uint32_t BUS_MESSAGE_BODY_SIZE(sd_bus_message *m) {
118 return BUS_MESSAGE_BSWAP32(m, m->header->body_size);
121 static inline uint32_t BUS_MESSAGE_FIELDS_SIZE(sd_bus_message *m) {
122 return BUS_MESSAGE_BSWAP32(m, m->header->fields_size);
125 static inline void bus_message_unrefp(sd_bus_message **m) {
126 sd_bus_message_unref(*m);
129 #define _cleanup_bus_message_unref_ __attribute__((cleanup(bus_message_unrefp)))
131 int bus_message_parse(sd_bus_message *m);
132 int bus_message_seal(sd_bus_message *m, uint64_t serial);
133 int bus_message_dump(sd_bus_message *m);
134 int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz);