FUNCTION::USER_STRIN(3stap)                      String and data retrieving fun                      FUNCTION::USER_STRIN(3stap)



NAME
       function::user_string_n2 - Retrieves string of given length from user space

SYNOPSIS
           user_string_n2:string(addr:long,n:long,err_msg:string)

ARGUMENTS
       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

DESCRIPTION
       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.



SystemTap Tapset Reference                                 August 2011                               FUNCTION::USER_STRIN(3stap)