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



NAME
       function::user_string_n_quoted - Retrieves and quotes string from user space

SYNOPSIS
           user_string_n_quoted:string(addr:long,n:long)

ARGUMENTS
       addr
           the user space address to retrieve the string from

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

DESCRIPTION
       Returns up to n characters of a C string from the given user space memory address where any ASCII characters that are not
       printable are replaced by the corresponding escape sequence in the returned string. Reports "NULL" for address zero.
       Returns "<unknown>" on the rare cases when userspace data is not accessible at the given address.



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