2. EL 6 ELS
  3. systemtap-client
  4. function::user_string_n2_quoted(3stap)

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FUNCTION::USER_STRIN(3stap) String and data retrieving fun FUNCTION::USER_STRIN(3stap)

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.

SEE ALSO0

tapset::uconversions(3stap)

June 2018 SystemTap Tapset Reference