* of the message.
*/
-struct ipc_labelh;
-
struct ipc_kmsg {
- struct ipc_kmsg *ikm_next;
- struct ipc_kmsg *ikm_prev;
- ipc_port_t ikm_prealloc; /* port we were preallocated from */
- mach_msg_size_t ikm_size;
- struct ipc_labelh *ikm_sender;
- mach_msg_header_t *ikm_header;
+ mach_msg_size_t ikm_size;
+ struct ipc_kmsg *ikm_next; /* next message on port/discard queue */
+ struct ipc_kmsg *ikm_prev; /* prev message on port/discard queue */
+ mach_msg_header_t *ikm_header;
+ ipc_port_t ikm_prealloc; /* port we were preallocated from */
+ ipc_port_t ikm_voucher; /* voucher port carried */
+ struct ipc_importance_elem *ikm_importance;/* inherited from */
+ queue_chain_t ikm_inheritance;/* inherited from link */
};
+#if defined(__i386__) || defined(__arm__)
+#define IKM_SUPPORT_LEGACY 1
+#else
+#define IKM_SUPPORT_LEGACY 0
+#endif
#define IKM_OVERHEAD (sizeof(struct ipc_kmsg))
#define ikm_prealloc_clear_inuse(kmsg, port) \
MACRO_BEGIN \
(kmsg)->ikm_prealloc = IP_NULL; \
- ip_release(port); \
MACRO_END
#define ikm_init(kmsg, size) \
MACRO_BEGIN \
(kmsg)->ikm_size = (size); \
(kmsg)->ikm_prealloc = IP_NULL; \
- (kmsg)->ikm_sender = NULL; \
+ (kmsg)->ikm_voucher = IP_NULL; \
+ (kmsg)->ikm_importance = IIE_NULL; \
assert((kmsg)->ikm_prev = (kmsg)->ikm_next = IKM_BOGUS); \
MACRO_END
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;
};
} \
MACRO_END
-/*
- * extern void
- * ipc_kmsg_send_always(ipc_kmsg_t);
- *
- * Unfortunately, to avoid warnings/lint about unused variables
- * when assertions are turned off, we need two versions of this.
- */
-#if MACH_ASSERT
-
-#define ipc_kmsg_send_always(kmsg) \
-MACRO_BEGIN \
- mach_msg_return_t mr2; \
- \
- mr2 = ipc_kmsg_send((kmsg), MACH_SEND_ALWAYS, \
- MACH_MSG_TIMEOUT_NONE); \
- assert(mr == MACH_MSG_SUCCESS); \
-MACRO_END
-
-#else /* MACH_ASSERT */
-
-#define ipc_kmsg_send_always(kmsg) \
-MACRO_BEGIN \
- (void) ipc_kmsg_send((kmsg), MACH_SEND_ALWAYS, \
- MACH_MSG_TIMEOUT_NONE); \
-MACRO_END
-
-#endif /* MACH_ASSERT */
-
-
/* Allocate a kernel message */
extern ipc_kmsg_t ipc_kmsg_alloc(
mach_msg_size_t size);
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);
/* Copyin port rights in the header of a message */
extern mach_msg_return_t ipc_kmsg_copyin_header(
- mach_msg_header_t *msg,
+ ipc_kmsg_t kmsg,
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_kmsg_t kmsg,
ipc_space_t space,
- mach_port_name_t notify);
+ mach_msg_option_t option);
/* Copyout a port right returning a name */
extern mach_msg_return_t ipc_kmsg_copyout_object(
ipc_kmsg_t kmsg,
ipc_space_t space,
vm_map_t map,
- mach_port_name_t notify,
- mach_msg_body_t *slist);
+ mach_msg_body_t *slist,
+ mach_msg_option_t option);
/* Copyout port rights and out-of-line memory from the body of a message */
extern mach_msg_return_t ipc_kmsg_copyout_body(
ipc_kmsg_t kmsg,
ipc_space_t space);
-/* get a scatter list and check consistency */
-extern mach_msg_body_t *ipc_kmsg_get_scatter(
- mach_vm_address_t msg_addr,
- mach_msg_size_t slist_size,
- ipc_kmsg_t kmsg);
+#if IKM_SUPPORT_LEGACY
+extern void ipc_kmsg_copyout_to_kernel_legacy(
+ ipc_kmsg_t kmsg,
+ ipc_space_t space);
+#endif
-/* free a scatter list */
-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_ */
projects / apple / xnu.git / blobdiff