Structs in osfmk/ipc

• ipc_kmsg_queue osfmk/ipc/ipc_kmsg.h:242
• ipc_object osfmk/ipc/ipc_object.h:93
• ipc_port osfmk/ipc/ipc_port.h:103
• ipc_space osfmk/ipc/ipc_space.h:97