| RTAS(2) | FreeBSD System Calls Manual | 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.