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RTAS(2)                                                                RTAS(2)



NAME
       rtas - Allows userspace to call RTAS (Run Time Abstraction Services)

SYNOPSIS
       int ppc_rtas (struct rtas_args *uargs);


DESCRIPTION
       ppc_rtas  enables  userspace  manipulation  of  the  RunTime  Abstraction  Services (RTAS). RTAS provides for a
       portable method of access and setting system information. For example, you could gather information on  various
       system  sensors  and  set  poweron values. RTAS is accessed via the /proc entry called "rtas". Manipulations on
       RTAS are implemented via command line arguments on /proc/rtas.  The values for uargs vary  greatly.   For  more
       information, see the view/arch/ppcKconfig file.


RETURN VALUE
       rtas returns 0 on success; otherwise it returns one of the errors listed in the "Errors" section.


ERRORS
       -EPERM User does not have CAP_SYS_ADMIN capabilities.


       -EFAULT
              Problem copying uargs values to/from user space.


       -EINVAL
              Either number of uargs passed in too large or size of uargs array too large.


AUTHOR
       Niki Rahimi.



                                                                       RTAS(2)