управление поведением выхода при отключении объекта шины (Control the exit behavior when the bus object disconnects)
Имя (Name)
sd_bus_set_exit_on_disconnect, sd_bus_get_exit_on_disconnect -
Control the exit behavior when the bus object disconnects
Синопсис (Synopsis)
#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);
Описание (Description)
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.
Возвращаемое значение (Return value)
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.
Errors
Returned errors may indicate the following problems:
-EINVAL
A required parameter was NULL.
-ENOPKG
The bus object could not be resolved.
-ECHILD
The bus connection was created in a different process.
Примечание (Note)
These APIs are implemented as a shared library, which can be
compiled and linked to with the libsystemd pkg-config(1) file.
Смотри также (See also)
systemd(1), sd-bus(3), sd_bus_attach_event(3), sd-event(3),
sd_event_exit(3)
