x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
SD_BUS_SET_SENDER(3) sd_bus_set_sender SD_BUS_SET_SENDER(3)
NAME
sd_bus_set_sender, sd_bus_get_sender - Configure default sender for
outgoing messages
SYNOPSIS
#include <systemd/sd-bus.h>
int sd_bus_set_sender(sd_bus *bus, const char* name);
int sd_bus_get_sender(sd_bus *bus, const char** name);
DESCRIPTION
sd_bus_set_sender() configures the default sender service name to use
for outgoing messages. The service name specified in the name parameter
is set on all outgoing messages that are sent on the connection and
have no sender set yet, for example through
sd_bus_message_set_sender(3). Note that this function is only supported
on direct connections, i.e. not on connections to a bus broker as the
broker will fill in the sender service name automatically anyway. By
default no sender name is configured, and hence messages are sent
without sender field set. If the name parameter is specified as NULL
the default sender service name is cleared, returning to the default
state if a default sender service name was set before. If passed as
non-NULL the specified name must be a valid unique or well-known
service name.
sd_bus_get_sender() may be used to query the current default service
name for outgoing messages.
RETURN VALUE
On success, these functions return 0 or a positive integer. On failure,
they return a negative errno-style error code.
Errors
Returned errors may indicate the following problems:
-ECHILD
The bus connection has been created in a different process, library
or module instance.
-EPERM
The specified bus connection object is a not a direct but a
brokered connection.
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.
SEE ALSO
systemd(1), sd-bus(3), sd_bus_message_set_sender(3)
systemd 254 SD_BUS_SET_SENDER(3)
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