---
name: "dpns_getusrmap"
section: "3"
platform: "linux"
package: "libdpm-dev"
version: "1.10.0-2+b3"
release: "Debian 10 (Buster)"
platforms: ["linux"]
url: "https://new.carta.tech/dpns_getusrmap"
---

# dpns\_getusrmap(3)

get all existing users from virtual uid table

## NAME

dpns\_getusrmap - get all existing users from virtual uid table

## SYNOPSIS

**#include \<sys/types.h\>**\
 **#include "dpns\_api.h"**

**int dpns\_getusrmap (int \****nbentries***,** **struct dpns\_userinfo \*\****usr\_entries***)**

## DESCRIPTION

**dpns\_getusrmap** gets all the existing users from the virtual uid table.

- *nbentries*

  will be set to the number of entries in the array of user infos.

- *usr\_entries*

  will be set to the address of an array of dpns\_userinfo structures allocated by the API. The client application is responsible for freeing the array when not needed anymore.

This function requires ADMIN privilege.

## RETURN VALUE

This routine returns 0 if the operation was successful or -1 if the operation failed. In the latter case, **serrno** is set appropriately.

## ERRORS

- **EACCES**

  The caller does not have ADMIN privilege.

- **ENOMEM**

  Memory could not be allocated for unmarshalling the reply.

- **EFAULT**

  *nbentries* or *usr\_entries* is a NULL pointer.

- **SENOSHOST**

  Host unknown.

- **SENOSSERV**

  Service unknown.

- **SECOMERR**

  Communication error.

- **ENSNACT**

  Name server is not running or is being shutdown.