FreeBSD sysctl MIB and to pass the objects info to userland: Alfonso S. Siciliano

Описание: From https://www.bsdcan.org/events/bsdcan_...

The FreeBSD kernel maintains a Management Information Base (MIB) where a component (object) represents a parameter of the system. The sysctl system call explores the MIB to find an object by its Object Identifier (OID) and calls its handler to get or set the value of the parameter. It is often necessary to find an object not to call its handler but to get its info (description, type, name, next object, etc.), so the kernel provides an undocumented interface implemented in kern_sysctl.c.