rtas

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 ar-
	      ray too large.


AUTHOR
       Niki Rahimi.



								      RTAS(2)