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 ALSO

       tapset::uconversions(3stap)

SystemTap Tapset Reference                         April 2016                        FUNCTION::USER_STRIN(3stap)