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

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

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

       2) 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.

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

tapset::uconversions(3stap)

SystemTap Tapset Reference                         April 2024                        FUNCTION::USER_STRIN(3stap)

       1) user_string_n:string(addr:long,n:long)

       2) user_string_n:string(addr:long,n:long,err_msg:string)