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"
32 #include "bus-creds.h"
34 struct bus_container {
37 unsigned index, saved_index;
55 struct bus_body_part {
56 struct bus_body_part *next;
67 struct sd_bus_message {
72 uint32_t reply_serial;
75 const char *interface;
77 const char *destination;
96 struct bus_header *header;
97 struct bus_body_part body;
98 struct bus_body_part *body_end;
99 unsigned n_body_parts;
102 struct bus_body_part *cached_rindex_part;
103 size_t cached_rindex_part_begin;
108 struct bus_container root_container, *containers;
109 unsigned n_containers;
112 struct iovec iovec_fixed[2];
115 struct kdbus_msg *kdbus;
117 char *peeked_signature;
119 /* If set replies to this message must carry the signature
120 * specified here to successfully seal. This is initialized
121 * from the vtable data */
122 const char *enforced_reply_signature;
126 char sender_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1];
127 char destination_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1];
130 #define BUS_MESSAGE_NEED_BSWAP(m) ((m)->header->endian != SD_BUS_NATIVE_ENDIAN)
132 static inline uint16_t BUS_MESSAGE_BSWAP16(sd_bus_message *m, uint16_t u) {
133 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_16(u) : u;
136 static inline uint32_t BUS_MESSAGE_BSWAP32(sd_bus_message *m, uint32_t u) {
137 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_32(u) : u;
140 static inline uint64_t BUS_MESSAGE_BSWAP64(sd_bus_message *m, uint64_t u) {
141 return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_64(u) : u;
144 static inline uint32_t BUS_MESSAGE_SERIAL(sd_bus_message *m) {
145 return BUS_MESSAGE_BSWAP32(m, m->header->serial);
148 static inline uint32_t BUS_MESSAGE_BODY_SIZE(sd_bus_message *m) {
149 return BUS_MESSAGE_BSWAP32(m, m->header->body_size);
152 static inline uint32_t BUS_MESSAGE_FIELDS_SIZE(sd_bus_message *m) {
153 return BUS_MESSAGE_BSWAP32(m, m->header->fields_size);
156 static inline uint32_t BUS_MESSAGE_SIZE(sd_bus_message *m) {
158 sizeof(struct bus_header) +
159 ALIGN8(BUS_MESSAGE_FIELDS_SIZE(m)) +
160 BUS_MESSAGE_BODY_SIZE(m);
163 static inline uint32_t BUS_MESSAGE_BODY_BEGIN(sd_bus_message *m) {
165 sizeof(struct bus_header) +
166 ALIGN8(BUS_MESSAGE_FIELDS_SIZE(m));
169 static inline void* BUS_MESSAGE_FIELDS(sd_bus_message *m) {
170 return (uint8_t*) m->header + sizeof(struct bus_header);
173 int bus_message_seal(sd_bus_message *m, uint64_t serial);
174 int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz);
175 int bus_message_read_strv_extend(sd_bus_message *m, char ***l);
177 int bus_message_from_header(
183 const struct ucred *ucred,
186 sd_bus_message **ret);
188 int bus_message_from_malloc(
194 const struct ucred *ucred,
196 sd_bus_message **ret);
198 const char* bus_message_get_arg(sd_bus_message *m, unsigned i);
200 int bus_message_append_ap(sd_bus_message *m, const char *types, va_list ap);
202 int bus_message_parse_fields(sd_bus_message *m);
204 bool bus_header_is_complete(struct bus_header *h, size_t size);
205 int bus_header_message_size(struct bus_header *h, size_t *sum);
207 struct bus_body_part *message_append_part(sd_bus_message *m);
209 #define MESSAGE_FOREACH_PART(part, i, m) \
210 for ((i) = 0, (part) = &(m)->body; (i) < (m)->n_body_parts; (i)++, (part) = (part)->next)
212 int bus_body_part_map(struct bus_body_part *part);
213 void bus_body_part_unmap(struct bus_body_part *part);
215 int bus_message_to_errno(sd_bus_message *m);
217 int bus_message_new_synthetic_error(sd_bus *bus, uint64_t serial, const sd_bus_error *e, sd_bus_message **m);