xnu-4903.221.2.tar.gz

[apple/xnu.git] / osfmk / ipc / ipc_pset.h

diff --git a/osfmk/ipc/ipc_pset.h b/osfmk/ipc/ipc_pset.h
index a18b9adcdfcade98441e3089db69022715d75216..42008febf8dbb904796ddad3aa857c442df786cf 100644 (file)
--- a/osfmk/ipc/ipc_pset.h
+++ b/osfmk/ipc/ipc_pset.h
@@ -94,10 +94,8 @@ struct ipc_pset {
 #define        ips_release(pset)       io_release(&(pset)->ips_object)
 
 /* get an ipc_pset pointer from an ipc_mqueue pointer */
-#define        ips_from_mq(mq)         ((struct ipc_pset *)((void *)( \
-                                       (char *)(mq) - \
-                                       __offsetof(struct ipc_pset, ips_messages)) \
-                               ))
+#define        ips_from_mq(mq) \
+               __container_of(mq, struct ipc_pset, ips_messages)
 
 /* Allocate a port set */
 extern kern_return_t ipc_pset_alloc(
@@ -132,6 +130,11 @@ extern kern_return_t ipc_pset_remove(
        ipc_pset_t      pset,
        ipc_port_t      port);
 
+/* lazily initialize the wqset of a port set */
+extern kern_return_t ipc_pset_lazy_allocate(
+       ipc_space_t      space,
+       mach_port_name_t psname);
+
 /* Remove a port from all its current port sets */
 extern kern_return_t ipc_pset_remove_from_all(
        ipc_port_t      port);
@@ -140,4 +143,22 @@ extern kern_return_t ipc_pset_remove_from_all(
 extern void ipc_pset_destroy(
        ipc_pset_t      pset);
 
+#if MACH_KERNEL_PRIVATE
+extern struct turnstile *filt_machport_kqueue_turnstile(
+       struct knote *kn);
+
+extern struct turnstile *filt_machport_stashed_special_reply_port_turnstile(
+       ipc_port_t port);
+
+extern void filt_machport_turnstile_prepare_lazily(
+       struct knote *kn,
+       mach_msg_type_name_t    msgt_name,
+       ipc_port_t port);
+
+extern struct turnstile *filt_machport_stash_port(
+       struct knote *kn,
+       ipc_port_t port,
+       int *link);
+#endif
+
 #endif /* _IPC_IPC_PSET_H_ */