sd_bus_message_seal
systemd
sd_bus_message_seal
3
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
uint64_t
timeout_usec
Description
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.
Return Value
On success, this function returns a non-negative integer. On failure, it returns a negative errno-style error code.
Errors
Returned errors may indicate the following problems:
-EINVAL
The m parameter is NULL.
-EBADMSG
The D-Bus message m has open containers.
-ENOMSG
The D-Bus message m is a reply but its type signature does not match the return type signature of its corresponding member in the object vtable.
History
sd_bus_message_seal() was added in version 246.
See Also
systemd(1), sd-bus(3), sd_bus_call(3), sd_bus_call_async(3), sd_bus_send(3)