SD_BUS_MESSAGE_SEAL(3)        sd_bus_message_seal       SD_BUS_MESSAGE_SEAL(3)

NAME
       sd_bus_message_seal - Prepare a D-Bus message for transmission

SYNOPSIS
       #include <systemd/sd-bus.h>

       int sd_bus_message_seal(sd_bus_message *m, uint64_t cookie,
                               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'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.

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.

           Added in version 246.

       -EBADMSG
           The D-Bus message m has open containers.

           Added in version 246.

       -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.

           Added in version 246.

NOTES
       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.

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)

systemd 255                                             SD_BUS_MESSAGE_SEAL(3)