sd_bus_message_seal - Man Page

#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 is 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​.

All functions listed here are thread-agnostic and only a single thread may operate on a given object at any given time​. Different threads may access the same object at different times​. Multiple independent objects may be used from different threads in parallel​.

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​.

sd_bus_message_seal() was added in version 246​.

systemd(1), sd-bus(3), sd_bus_call(3), sd_bus_call_async(3), sd_bus_send(3)

sd-bus(3), systemd.directives(7), systemd.index(7).