sd_bus_message_seal — Prepare a D-Bus message for transmission
#include <systemd/sd-bus.h>
int sd_bus_message_seal( | sd_bus_message *m, |
| uint64_t cookie, | |
uint64_t timeout_usec); |
sd_bus_message_seal() finishes the message m
and prepares it for transmission using
sd_bus_send(3).
cookie specifies the identifier used to match the message reply to its
corresponding request. timeout_usec specifies the maximum time in
microseconds to wait for a reply to arrive.
Note that in most scenarios, it's not necessary to call this function directly. sd_bus_call(3), sd_bus_call_async(3) and sd_bus_send(3) will seal any given messages if they have not been sealed yet.
On success, this function returns a non-negative integer. On failure, it returns a negative errno-style error code.
Functions described here are available as a shared
library, which can be compiled against and linked to with the
libsystemd pkg-config(1)
file.
The code described here uses
getenv(3),
which is declared to be not multi-thread-safe. This means that the code calling the functions described
here must not call
setenv(3)
from a parallel thread. It is recommended to only do calls to setenv()
from an early phase of the program when no other threads have been started.