Provided by: systemtap-doc_4.8-1_amd64 bug

NAME

       function::user_string_n_warn - Retrieves string from user space

SYNOPSIS

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

       2) user_string_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

       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.

SEE ALSO

       tapset::uconversions(3stap)