Index · Directives systemd 239


sd_bus_get_fd — Get the file descriptor connected to the message bus


#include <systemd/sd-bus.h>
int sd_bus_get_fd(sd_bus *bus);


sd_bus_get_fd() returns the file descriptor used to communicate with the message bus. This descriptor can be used with select(3), poll(3), or similar functions to wait for incoming messages.

If the bus was created with the sd_bus_set_fd(3) function, then the input_fd used in that call is returned.

Return Value

Returns the file descriptor used for incoming messages from the message bus.

See Also

systemd(1), sd-bus(3), sd_bus_set_fd(3),