KnIoPermitPort()

This function is declared in the coresrv/io/ports.h file.

Retcode KnIoPermitPort(Handle rid, Handle *handle);

This function allows a process to access the port (range of ports) with the handle rid.

Output parameter handle contains the handle of this permission.

Returns rcOk if successful.

Example

static Retcode PortInit(IOPort *resource)

{

Retcode rc = rcFail;

rc = KnRegisterPorts(resource->base,

resource->size,

&resource->handle);

if (rc == rcOk)

rc = KnIoPermitPort(resource->handle, &resource->permitHandle);

resource->addr = (void *) (rtl_uintptr_t) resource->base;

return rc;

}