Mach messages: fairplayd_notification

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osfmk/mach/fairplayd_notification.defs. Service/callback interface outside the ordinary kernel kobject table. Follow local sender/receiver evidence; external service bodies are not supplied by the declaration. Registration evidence: mig_e.

Reading these entries

IDs are computed from the explicit preprocessing profiles in the catalog guide, counting both routines and skip slots. They are not discovered from a running kernel. Each entry retains all observed names/declaration locations; the displayed fields come from the first non-skipped profile. Alternative declarations can have different fields. simpleroutine is one-way at the MIG interface level.

An interface contract block quotes the adjacent local .defs comment with whitespace normalized. Mechanism paragraphs explain selected implementation decisions. Local body links and call names identify implementation evidence; syntactic call lists are reading aids, not a proof that every listed call executes on every path. Short complete implementation bodies are included where especially useful.

Complete routine and reserved-slot catalog

41471: fairplayd_arcade_request

Interface contract:

Notification from the kernel requesting a new arcade service port from fairplayd. Instead of replying with a port, the new port passed to the arcade_provider port sent here via arcade_set_upcall_port().

Mechanism: The refresh path marks refresh-in-progress, releases an old upcall port, obtains the host fairplayd endpoint and sends the registration capability. Only a successful send reaches its interruptible deadline wait for registration; an invalid endpoint or failed send clears refresh-in-progress without that wait. Concurrent refresh callers instead sleep on the in-progress flag without this explicit deadline. The external daemon must register an upcall through the separate kernel receiver. Local path.

Declarations: fairplayd_arcade_request (server64, server32, client64, client32, libsyscall64, sender64, local64).

Fields after preprocessing (server64):

simpleroutine fairplayd_arcade_request(
              fairplayd_port : mach_port_t;
              arcade_reg_port : mach_port_t);

Implementation boundary: no same-symbol receiver body was resolved in the indexed local C/C++ implementation files. Local source occurrences to follow: osfmk/kern/arcade.c:223. These may be senders, wrappers or declarations; they do not establish a local receiver.