---
name: "sd_bus_object_path_is_valid"
section: "3"
platform: "linux"
package: "libsystemd-dev"
version: "257.13-1~deb13u1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/sd_bus_interface_name_is_valid"
---

# sd\_bus\_object\_path\_is\_valid(3)

Check if a string is a valid bus name or object path

Part of [sd\_bus\_interface\_name\_is\_valid(3)](/sd_bus_interface_name_is_valid/3.md).

## NAME

sd\_bus\_interface\_name\_is\_valid, sd\_bus\_service\_name\_is\_valid, sd\_bus\_member\_name\_is\_valid, sd\_bus\_object\_path\_is\_valid - Check if a string is a valid bus name or object path

## SYNOPSIS

```
#include <systemd/sd-bus.h>
```

**int sd\_bus\_interface\_name\_is\_valid(const char\*** *p***);**

**int sd\_bus\_service\_name\_is\_valid(const char\*** *p***);**

**int sd\_bus\_member\_name\_is\_valid(const char\*** *p***);**

**int sd\_bus\_object\_path\_is\_valid(const char\*** *p***);**

## DESCRIPTION

**sd\_bus\_interface\_name\_is\_valid()** checks if a given string *p* is a syntactically valid bus interface name. Similarly, **sd\_bus\_service\_name\_is\_valid()** checks if the argument is a valid bus service name, **sd\_bus\_member\_name\_is\_valid()** checks if the argument is a valid bus interface member name, and **sd\_bus\_object\_path\_is\_valid()** checks if the argument is a valid bus object path. Those functions generally check that only allowed characters are used and that the length of the string is within limits.

## RETURN VALUE

Those functions return 1 if the argument is a valid interface / service / member name or object path, and 0 if it is not. If the argument is **NULL**, an error is returned.

### Errors

Returned errors may indicate the following problems:

**-EINVAL**

The *p* parameter is **NULL**.

## 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.

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\_interface\_name\_is\_valid()**, **sd\_bus\_service\_name\_is\_valid()**, **sd\_bus\_member\_name\_is\_valid()**, and **sd\_bus\_object\_path\_is\_valid()** were added in version 246.

## SEE ALSO

[**systemd**(1)](/systemd/1.md), [**sd-bus**(3)](/sd-bus/3.md), [**sd\_bus\_call\_method**(3)](/sd_bus_call_method/3.md)