---
name: "function::user_string_n2_quoted"
section: "3stap"
platform: "linux"
package: "systemtap-doc"
version: "2.6-0.2"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/function::user_string_n2_quoted"
---

# function::user\_string\_n2\_quoted(3stap)

Retrieves and quotes string from user space

## NAME

function::user\_string\_n2\_quoted - Retrieves and quotes string from user space

## SYNOPSIS

```
    user_string_n2_quoted:string(addr:long,inlen:long,outlen:long)
```

## ARGUMENTS

*addr*

the user space address to retrieve the string from

*inlen*

the maximum length of the string to read (if not null terminated)

*outlen*

the maximum length of the output string

## DESCRIPTION

Reads up to inlen characters of a C string from the given user space memory address, and returns up to outlen characters, where any ASCII characters that are not printable are replaced by the corresponding escape sequence in the returned string. Note that the string will be surrounded by double quotes. On the rare cases when userspace data is not accessible at the given address, the address itself is returned as a string, without double quotes.