sd_bus_can_send — Check which types can be sent over a bus object
sd_bus_can_send() is mostly used for checking if file descriptor
passing is available on the given bus.
type can be any of the
sd_bus_can_send() returns a negative errno-style error
code. If values of the given type can be sent over the given bus, it returns a positive integer.
Otherwise, it returns zero.
Returned errors may indicate the following problems:
Functions described here are available as a shared
library, which can be compiled against and linked to with the
The code described here uses
which is declared to be not multi-thread-safe. This means that the code calling the functions described
here must not call
from a parallel thread. It is recommended to only do calls to
from an early phase of the program when no other threads have been started.
sd_bus_can_send() was added in version 246.