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Host Interface

This section describes the Mach interface to a host executing a Mach kernel. The intrface allows it to query statistics about a host and control its behaviour.

A host is represented by two ports, a name port host of type host_t used to query information about the host accessible to everyone and a control port host_priv of type host_priv_t used to manipulate it. For example, you can query the current time over the name port, but to change the time you need to send a message to the host control port.

A send right to the name port of the host a task is running on is available with the mach_host_self system trap. A send right to the host control port is inserted into the first task at bootstrap.

Everything described in this section is declared in the header file `mach.h'.

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