FUNCTION::USERSTRIN(3stString and data retrieving FUNCTION::USERSTRIN(3stap)

NAME
       function::userstring - Retrieves string from user space

SYNOPSIS
       1) userstring:string(addr:long)

       2) userstring:string(addr:long,errmsg:string)

ARGUMENTS
       addr
           the user space address to retrieve the string from

       errmsg
           the error message to return when data isn't available

DESCRIPTION
       1) Returns the null terminated C string from a given user space memory
       address. Reports an error on the rare cases when userspace data is not
       accessible.

       2) Returns the null terminated C string from a given user space memory
       address. Reports the given error message on the rare cases when
       userspace data is not accessible.

SEE ALSO
       tapset::uconversions(3stap)



SystemTap Tapset Reference         June 2018       FUNCTION::USERSTRIN(3stap)