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/>.
26 #include <sys/socket.h>
31 #include "time-util.h"
33 struct bus_container {
36 unsigned index, saved_index;
54 struct bus_body_part {
55 struct bus_body_part *next;
66 struct sd_bus_message {
71 uint32_t reply_serial;
74 const char *interface;
76 const char *destination;
100 struct bus_header *header;
101 struct bus_body_part body;
102 struct bus_body_part *body_end;
103 unsigned n_body_parts;
108 struct bus_body_part *cached_rindex_part;
109 size_t cached_rindex_part_begin;
114 struct bus_container root_container, *containers;
115 unsigned n_containers;
118 struct iovec iovec_fixed[2];
121 struct kdbus_msg *kdbus;
123 char *peeked_signature;
127 char sender_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1];
128 char destination_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1];
132 const char *tid_comm;
136 size_t cmdline_length;
137 char **cmdline_array;
143 struct kdbus_audit *audit;
146 size_t capability_size;
149 #define BUS_MESSAGE_NEED_BSWAP(m) ((m)->header->endian != SD_BUS_NATIVE_ENDIAN)
151 static inline uint16_t BUS_MESSAGE_BSWAP16(sd_bus_message *m, uint16_t u) {
152 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_16(u) : u;
155 static inline uint32_t BUS_MESSAGE_BSWAP32(sd_bus_message *m, uint32_t u) {
156 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_32(u) : u;
159 static inline uint64_t BUS_MESSAGE_BSWAP64(sd_bus_message *m, uint64_t u) {
160 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_64(u) : u;
163 static inline uint32_t BUS_MESSAGE_SERIAL(sd_bus_message *m) {
164 return BUS_MESSAGE_BSWAP32(m, m->header->serial);
167 static inline uint32_t BUS_MESSAGE_BODY_SIZE(sd_bus_message *m) {
168 return BUS_MESSAGE_BSWAP32(m, m->header->body_size);
171 static inline uint32_t BUS_MESSAGE_FIELDS_SIZE(sd_bus_message *m) {
172 return BUS_MESSAGE_BSWAP32(m, m->header->fields_size);
175 static inline uint32_t BUS_MESSAGE_SIZE(sd_bus_message *m) {
177 sizeof(struct bus_header) +
178 ALIGN8(BUS_MESSAGE_FIELDS_SIZE(m)) +
179 BUS_MESSAGE_BODY_SIZE(m);
182 static inline uint32_t BUS_MESSAGE_BODY_BEGIN(sd_bus_message *m) {
184 sizeof(struct bus_header) +
185 ALIGN8(BUS_MESSAGE_FIELDS_SIZE(m));
188 static inline void* BUS_MESSAGE_FIELDS(sd_bus_message *m) {
189 return (uint8_t*) m->header + sizeof(struct bus_header);
192 static inline void bus_message_unrefp(sd_bus_message **m) {
193 sd_bus_message_unref(*m);
196 #define _cleanup_bus_message_unref_ __attribute__((cleanup(bus_message_unrefp)))
198 int bus_message_seal(sd_bus_message *m, uint64_t serial);
199 int bus_message_dump(sd_bus_message *m);
200 int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz);
201 int bus_message_read_strv_extend(sd_bus_message *m, char ***l);
203 int bus_message_from_header(
208 const struct ucred *ucred,
211 sd_bus_message **ret);
213 int bus_message_from_malloc(
218 const struct ucred *ucred,
220 sd_bus_message **ret);
222 const char* bus_message_get_arg(sd_bus_message *m, unsigned i);
224 int bus_message_append_ap(sd_bus_message *m, const char *types, va_list ap);
226 int bus_message_parse_fields(sd_bus_message *m);
228 bool bus_header_is_complete(struct bus_header *h, size_t size);
229 int bus_header_message_size(struct bus_header *h, size_t *sum);
231 struct bus_body_part *message_append_part(sd_bus_message *m);
233 #define MESSAGE_FOREACH_PART(part, i, m) \
234 for ((i) = 0, (part) = &(m)->body; (i) < (m)->n_body_parts; (i)++, (part) = (part)->next)
236 int bus_body_part_map(struct bus_body_part *part);
237 void bus_body_part_unmap(struct bus_body_part *part);
239 int bus_message_to_errno(sd_bus_message *m);
241 int bus_message_new_synthetic_error(sd_bus *bus, uint64_t serial, const sd_bus_error *e, sd_bus_message **m);