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.
