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)