xnu-2422.100.13.tar.gz

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

diff --git a/osfmk/ipc/ipc_kmsg.h b/osfmk/ipc/ipc_kmsg.h
index db7e6acf49cb22331581f618e6ae0f16f7064151..5e742e00746c7db0bd9ae0236ca03426204fc4c4 100644 (file)
--- a/osfmk/ipc/ipc_kmsg.h
+++ b/osfmk/ipc/ipc_kmsg.h
@@ -104,6 +104,11 @@ struct ipc_kmsg {
        mach_msg_header_t *ikm_header;
 };
 
+#if defined(__i386__) || defined(__arm__)
+#define        IKM_SUPPORT_LEGACY      1
+#else
+#define        IKM_SUPPORT_LEGACY      0
+#endif
 
 #define        IKM_OVERHEAD            (sizeof(struct ipc_kmsg))
 
@@ -139,7 +144,6 @@ MACRO_END
 #define ikm_prealloc_clear_inuse(kmsg, port)                           \
 MACRO_BEGIN                                                            \
        (kmsg)->ikm_prealloc = IP_NULL;                                 \
-       ip_release(port);                                               \
 MACRO_END
 
 #define        ikm_init(kmsg, size)                                            \
@@ -157,6 +161,12 @@ MACRO_BEGIN                                                                \
        assert((kmsg)->ikm_next == IKM_BOGUS);                          \
 MACRO_END
 
+#define ikm_set_header(kmsg, mtsize)                                   \
+MACRO_BEGIN                                                            \
+       (kmsg)->ikm_header = (mach_msg_header_t *)                      \
+       ((vm_offset_t)((kmsg) + 1) + (kmsg)->ikm_size - (mtsize));      \
+MACRO_END
+
 struct ipc_kmsg_queue {
        struct ipc_kmsg *ikmq_base;
 };
@@ -238,14 +248,6 @@ MACRO_BEGIN                                                                \
        }                                                               \
 MACRO_END
 
-/*
- *     extern void
- *     ipc_kmsg_send_always(ipc_kmsg_t);
- */
-#define        ipc_kmsg_send_always(kmsg)                                      \
-       ipc_kmsg_send((kmsg), MACH_SEND_ALWAYS, MACH_MSG_TIMEOUT_NONE)
-
-
 /* Allocate a kernel message */
 extern ipc_kmsg_t ipc_kmsg_alloc(
         mach_msg_size_t size);
@@ -258,17 +260,23 @@ extern void ipc_kmsg_free(
 extern void ipc_kmsg_destroy(
        ipc_kmsg_t      kmsg);
 
-/* destroy kernel message and a reference on the dest */
-extern void ipc_kmsg_destroy_dest(
-       ipc_kmsg_t      kmsg);
+/* Enqueue kernel message for deferred destruction */
+extern boolean_t ipc_kmsg_delayed_destroy(
+       ipc_kmsg_t kmsg);
 
+/* Process all the delayed message destroys */
+extern void ipc_kmsg_reap_delayed(void);
 
 /* Preallocate a kernel message buffer */
+extern ipc_kmsg_t ipc_kmsg_prealloc(
+       mach_msg_size_t size);
+
+/* bind a preallocated message buffer to a port */
 extern void ipc_kmsg_set_prealloc(
        ipc_kmsg_t      kmsg,
        ipc_port_t      port);
 
-/* Clear a kernel message buffer */
+/* Clear preallocated message buffer binding */
 extern void ipc_kmsg_clear_prealloc(
        ipc_kmsg_t      kmsg,
        ipc_port_t      port);
@@ -307,24 +315,28 @@ extern void ipc_kmsg_put_to_kernel(
 extern mach_msg_return_t ipc_kmsg_copyin_header(
        mach_msg_header_t       *msg,
        ipc_space_t             space,
-       mach_port_name_t        notify);
+       mach_msg_option_t       *optionp);
 
 /* Copyin port rights and out-of-line memory from a user message */
 extern mach_msg_return_t ipc_kmsg_copyin(
        ipc_kmsg_t              kmsg,
        ipc_space_t             space,
        vm_map_t                map,
-       mach_port_name_t        notify);
+       mach_msg_option_t       *optionp);
 
 /* Copyin port rights and out-of-line memory from a kernel message */
-extern void ipc_kmsg_copyin_from_kernel(
+extern mach_msg_return_t ipc_kmsg_copyin_from_kernel(
        ipc_kmsg_t              kmsg);
 
+#if IKM_SUPPORT_LEGACY
+extern mach_msg_return_t ipc_kmsg_copyin_from_kernel_legacy(
+       ipc_kmsg_t      kmsg);
+#endif
+
 /* Copyout port rights in the header of a message */
 extern mach_msg_return_t ipc_kmsg_copyout_header(
        mach_msg_header_t       *msg,
-       ipc_space_t             space,
-       mach_port_name_t        notify);
+       ipc_space_t             space);
 
 /* Copyout a port right returning a name */
 extern mach_msg_return_t ipc_kmsg_copyout_object(
@@ -338,7 +350,6 @@ extern mach_msg_return_t ipc_kmsg_copyout(
        ipc_kmsg_t              kmsg,
        ipc_space_t             space,
        vm_map_t                map,
-       mach_port_name_t        notify,
        mach_msg_body_t         *slist);
 
 /* Copyout port rights and out-of-line memory from the body of a message */
@@ -371,6 +382,12 @@ extern void ipc_kmsg_copyout_to_kernel(
        ipc_kmsg_t              kmsg,
        ipc_space_t             space);
 
+#if IKM_SUPPORT_LEGACY
+extern void ipc_kmsg_copyout_to_kernel_legacy(
+       ipc_kmsg_t              kmsg,
+       ipc_space_t             space);
+#endif
+
 /* get a scatter list and check consistency */
 extern mach_msg_body_t *ipc_kmsg_get_scatter(
         mach_vm_address_t       msg_addr,
@@ -382,5 +399,12 @@ extern void ipc_kmsg_free_scatter(
         mach_msg_body_t        *slist,
         mach_msg_size_t                slist_size);
 
+
+extern mach_msg_trailer_size_t
+ipc_kmsg_add_trailer(ipc_kmsg_t kmsg, ipc_space_t space, 
+               mach_msg_option_t option, thread_t thread, 
+               mach_port_seqno_t seqno, boolean_t minimal_trailer,
+               mach_vm_offset_t context);
+
 #endif /* _IPC_IPC_KMSG_H_ */