sd_bus_set_exit_on_disconnect, sd_bus_get_exit_on_disconnect — Control the exit behavior when the bus object disconnects
#include <systemd/sd-bus.h>
int sd_bus_set_exit_on_disconnect( | sd_bus *bus, |
int b); |
int sd_bus_get_exit_on_disconnect( | sd_bus *bus); |
sd_bus_set_exit_on_disconnect() may be used to configure the exit
behavior when the given bus object disconnects. If b is zero, no special
logic is executed when the bus object disconnects. If b is non-zero, the
behavior on disconnect depends on whether the bus object is attached to an event loop or not. If
the bus object is attached to an event loop (see
sd_bus_attach_event(3)),
the event loop is closed when the bus object disconnects (as if calling
sd_event_exit(3)).
Otherwise,
exit(3)
is called. The exit code passed to sd_event_exit() and
exit() is EXIT_FAILURE. If the bus object has already
disconnected when enabling the exit behavior, the exit behavior is executed immediately. By
default, the exit behavior is disabled.
sd_bus_get_exit_on_disconnect() returns whether the exit on
disconnect behavior is enabled for the given bus object.
On success, sd_bus_set_exit_on_disconnect() returns a non-negative
integer. On failure, it returns a negative errno-style error code.
sd_bus_get_exit_on_disconnect() returns a positive integer if the
exit on disconnect behavior is enabled. Otherwise, it returns zero.
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.
sd_bus_set_exit_on_disconnect() and
sd_bus_get_exit_on_disconnect() were added in version 246.