---
name: "function::user_string"
section: "3stap"
platform: "linux"
package: "systemtap-doc"
version: "5.1-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/function::user_string"
---

# function::user\_string(3stap)

Retrieves string from user space

## NAME

function::user\_string - Retrieves string from user space

## SYNOPSIS

```
1) user_string:string(addr:long)
```

```
2) user_string:string(addr:long,err_msg:string)
```

## ARGUMENTS

*addr*

the user space address to retrieve the string from

*err\_msg*

the error message to return when data isn't available

## DESCRIPTION

1\) Returns the null terminated C string from a given user space memory address. Reports an error on the rare cases when userspace data is not accessible.

2\) Returns the null terminated C string from a given user space memory address. Reports the given error message on the rare cases when userspace data is not accessible.

## SEE ALSO0

[*tapset::uconversions*(3stap)](/tapset::uconversions/3stap.md)

## SEE ALSO0

[*tapset::uconversions*(3stap)](/tapset::uconversions/3stap.md)