NAME

       function::user_string2_n_warn - Retrieves string from user space with alternative warning string

SYNOPSIS

           user_string2_n_warn:string(addr:long,n:long,warn_msg:string)

ARGUMENTS

       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

DESCRIPTION

       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.

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