Dear all,
I am studying a open source project, and it use the systemd. when I check the property change on dbus, and I found a question, so I sent the email to ask for advice.
when change the property on dbus, it use the function of "sd_bus_emit_properties_changed_strv()" ((systemd\src\libsystemd\sd-bus\bus-objects.c )). But why the function don't include a parameter of value, it just have bus, path, interface, and property-name. How does this function know what to change of the property?
_public_ int sd_bus_emit_properties_changed_strv(
sd_bus *bus,
const char *path,
const char *interface,
char **names) {
_cleanup_free_ char *prefix = NULL;
bool found_interface = false;
size_t pl;
int r;
......
}
I am looking forward to your reply.
thanks，
Byron
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