sd_bus_set_exit_on_disconnect(3) — Linux manual page


SD_BUS_...SCONNECT(3) sd_bus_set_exit_on_disconnectSD_BUS_...SCONNECT(3)

NAME         top

       sd_bus_set_exit_on_disconnect, sd_bus_get_exit_on_disconnect -
       Control the exit behavior when the bus object disconnects

SYNOPSIS         top

       #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);

DESCRIPTION         top

       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.

RETURN VALUE         top

       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

       Returned errors may indicate the following problems:

           A required parameter was NULL.

           Added in version 246.

           The bus object could not be resolved.

           Added in version 246.

           The bus connection was created in a different process,
           library or module instance.

           Added in version 246.

NOTES         top

       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

HISTORY         top

       sd_bus_set_exit_on_disconnect() and
       sd_bus_get_exit_on_disconnect() were added in version 246.

SEE ALSO         top

       systemd(1), sd-bus(3), sd_bus_attach_event(3), sd-event(3),

COLOPHON         top

       This page is part of the systemd (systemd system and service
       manager) project.  Information about the project can be found at
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       This page was obtained from the project's upstream Git repository
       ⟨⟩ on 2023-12-22.  (At that
       time, the date of the most recent commit that was found in the
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systemd 255                                        SD_BUS_...SCONNECT(3)

Pages that refer to this page: sd-bus(3)systemd.directives(7)systemd.index(7)