NAME

       function::user_string_warn - Retrieves string from user space

SYNOPSIS

       1) user_string_warn:string(addr:long)

       2) user_string_warn:string(addr:long,warn_msg:string)

ARGUMENTS

       addr
           the user space address to retrieve the string from

       warn_msg
           the warning message to return when data isn't available

DESCRIPTION

       1) Returns the null terminated C string from a given user space memory address. Reports "" on the rare
       cases when userspace data is not accessible and warns (but does not abort) about the failure.

       2) Returns the null terminated 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)

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