function::user_string_n_warn — Retrieves string from user space
1) user_string_n_warn:string(addr:long,n:long)
2) user_string_n_warn:string(addr:long,n:long,warn_msg:string)
addrthe user space address to retrieve the string from
nthe maximum length of the string (if not null terminated)
warn_msgthe 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.