function::user_string_n_warn - Retrieves string from user space

addr
           the user space address to retrieve the string from

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

       warn_msg
           the warning message to return when data isn't available

       1) Returns up to n characters of a C string from a given user space memory address. Reports“<unknown>” on
       the rare cases when userspace data is not accessible and warns (but does not abort) about the failure.

       2) Returns up to n characters of a C string from a given user space memory address. Reports the given
       warning message on the rare cases when userspace data is not accessible and warns (but does not abort)
       about the failure.

       function::user_string_n_warn - Retrieves string from user space

tapset::uconversions(3stap)

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

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

       2) user_string_n_warn:string(addr:long,n:long,warn_msg:string)