---
name: "sd_bus_set_exit_on_disconnect"
section: "3"
platform: "linux"
package: "systemd-libs"
version: "262.1-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/sd_bus_set_exit_on_disconnect"
---

# sd\_bus\_set\_exit\_on\_disconnect(3)

Control the exit behavior when the bus object disconnects

## NAME

sd\_bus\_set\_exit\_on\_disconnect, sd\_bus\_get\_exit\_on\_disconnect - Control the exit behavior when the bus object disconnects

## 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***);**

## 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)](/sd_bus_attach_event/3.md)), the event loop is closed when the bus object disconnects (as if calling [**sd\_event\_exit**(3)](/sd_event_exit/3.md)). Otherwise, [**exit**(3)](/exit/3.md) 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

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**.

Added in version 246.

**-ENOPKG**

The bus object could not be resolved.

Added in version 246.

**-ECHILD**

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

Added in version 246.

## NOTES

Functions described here are available as a shared library, which can be compiled against and linked to with the **libsystemd** [**pkg-config**(1)](/pkg-config/1.md) file.

All functions listed here are thread-agnostic and only a single thread may operate on a given object at any given time. Different threads may access the same object at different times. Multiple independent objects may be used from different threads in parallel.

The code described here uses [**getenv**(3)](/getenv/3.md), which is declared to be not multi-thread-safe. This means that the code calling the functions described here must not call [**setenv**(3)](/setenv/3.md) 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.

## HISTORY

**sd\_bus\_set\_exit\_on\_disconnect()** and **sd\_bus\_get\_exit\_on\_disconnect()** were added in version 246.

## SEE ALSO

[**systemd**(1)](/systemd/1.md), [**sd-bus**(3)](/sd-bus/3.md), [**sd\_bus\_attach\_event**(3)](/sd_bus_attach_event/3.md), [**sd-event**(3)](/sd-event/3.md), [**sd\_event\_exit**(3)](/sd_event_exit/3.md)