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 cookie uint64_t timeout_usec sd_bus_message_seal() finishes the message m and prepares it for transmission using sd_bus_send3. 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_call3, sd_bus_call_async3 and sd_bus_send3 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. 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. sd_bus_message_seal() was added in version 246. systemd1, sd-bus3, sd_bus_call3, sd_bus_call_async3, sd_bus_send3