2. EL 6 ELS
  3. systemtap-client
  4. function::user_string_n2(3stap)

Scroll to navigation

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

NAME

function::user_string_n2 - Retrieves string of given length from user space

SYNOPSIS



    user_string_n2:string(addr:long,n:long,err_msg:string)

ARGUMENTS

addr

the user space address to retrieve the string from

n

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

err_msg

the error message to return when data isn´t available

DESCRIPTION

Returns the C string of a maximum given length from a given user space address. Returns the given error message string on the rare cases when userspace data is not accessible at the given address.

SEE ALSO0

tapset::uconversions(3stap)

June 2018 SystemTap Tapset Reference