osfmk/kern/ipc_mig.h

   1 /*
   2  * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * @OSF_COPYRIGHT@
  30  */
  31
  32 #ifndef _KERN_IPC_MIG_H_
  33 #define _KERN_IPC_MIG_H_
  34
  35 #include <mach/mig.h>
  36 #include <mach/mach_types.h>
  37 #include <mach/message.h>
  38 #include <kern/kern_types.h>
  39
  40 #include <sys/cdefs.h>
  41
  42 #ifdef  XNU_KERNEL_PRIVATE
  43
  44 #include <sys/kdebug.h>
  45
  46 /*
  47  * Define the trace points for MIG-generated calls.  One traces the input parameters
  48  * to MIG called things, another traces the outputs, and one traces bad message IDs.
  49  */
  50 #ifdef _MIG_TRACE_PARAMETERS_
  51
  52 #define __BeforeRcvCallTrace(msgid,arg1,arg2,arg3,arg4)                               \
  53         KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,          \
  54                               KDBG_MIGCODE(msgid) | DBG_FUNC_START,   \
  55                               (unsigned int)(arg1),                                   \
  56                               (unsigned int)(arg2),                                   \
  57                               (unsigned int)(arg3),                                   \
  58                               (unsigned int)(arg4),                                   \
  59                               (unsigned int)(0));
  60
  61 #define __AfterRcvCallTrace(msgid,arg1,arg2,arg3,arg4)                                \
  62         KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,          \
  63                               KDBG_MIGCODE(msgid) | DBG_FUNC_END,     \
  64                               (unsigned int)(arg1),                                   \
  65                               (unsigned int)(arg2),                                   \
  66                               (unsigned int)(arg3),                                   \
  67                               (unsigned int)(arg4),                                   \
  68                               (unsigned int)(0));
  69
  70 #define __BeforeSimpleCallTrace(msgid,arg1,arg2,arg3,arg4)                            \
  71         KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,          \
  72                               KDBG_MIGCODE(msgid) | DBG_FUNC_START,   \
  73                               (unsigned int)(arg1),                                   \
  74                               (unsigned int)(arg2),                                   \
  75                               (unsigned int)(arg3),                                   \
  76                               (unsigned int)(arg4),                                   \
  77                               (unsigned int)(0));
  78
  79 #define __AfterSimpleCallTrace(msgid,arg1,arg2,arg3,arg4)                             \
  80         KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,          \
  81                       KDBG_MIGCODE(msgid) | DBG_FUNC_END,     \
  82                               (unsigned int)(arg1),                                   \
  83                               (unsigned int)(arg2),                                   \
  84                               (unsigned int)(arg3),                                   \
  85                               (unsigned int)(arg4),                                   \
  86                               (unsigned int)(0));
  87
  88 #else /* !_MIG_TRACE_PARAMETERS_ */
  89
  90 #define __BeforeRcvRpc(msgid, _NAME_)                                                 \
  91         KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,          \
  92                               KDBG_MIGCODE(msgid) | DBG_FUNC_START,   \
  93                               (unsigned int)(0),                                      \
  94                               (unsigned int)(0),                                      \
  95                               (unsigned int)(0),                                      \
  96                               (unsigned int)(0),                                      \
  97                               (unsigned int)(0));
  98
  99 #define __AfterRcvRpc(msgid, _NAME_)                                                  \
 100         KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,          \
 101                       KDBG_MIGCODE(msgid) | DBG_FUNC_END,     \
 102                               (unsigned int)(0),                                      \
 103                               (unsigned int)(0),                                      \
 104                               (unsigned int)(0),                                      \
 105                               (unsigned int)(0),                                      \
 106                               (unsigned int)(0));
 107
 108
 109 #define __BeforeRcvSimple(msgid, _NAME_)                                              \
 110         KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,          \
 111                               KDBG_MIGCODE(msgid) | DBG_FUNC_START,   \
 112                               (unsigned int)(0),                                      \
 113                               (unsigned int)(0),                                      \
 114                               (unsigned int)(0),                                      \
 115                               (unsigned int)(0),                                      \
 116                               (unsigned int)(0));
 117
 118 #define __AfterRcvSimple(msgid, _NAME_)                                               \
 119         KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,          \
 120                               KDBG_MIGCODE(msgid) | DBG_FUNC_END,     \
 121                               (unsigned int)(0),                                      \
 122                               (unsigned int)(0),                                      \
 123                               (unsigned int)(0),                                      \
 124                               (unsigned int)(0),                                      \
 125                               (unsigned int)(0));
 126
 127 #endif /* !_MIG_TRACE_PARAMETERS_ */
 128
 129 #define _MIG_MSGID_INVALID(msgid)                                                     \
 130         KERNEL_DEBUG_CONSTANT_IST(KDEBUG_TRACE,          \
 131                               MACHDBG_CODE(DBG_MACH_MSGID_INVALID, (msgid)),  \
 132                               (unsigned int)(0),                                      \
 133                               (unsigned int)(0),                                      \
 134                               (unsigned int)(0),                                      \
 135                               (unsigned int)(0),                                      \
 136                               (unsigned int)(0))
 137
 138 #endif  /* XNU_KERNEL_PRIVATE */
 139
 140 __BEGIN_DECLS
 141
 142 /* Send a message from the kernel */
 143
 144 extern mach_msg_return_t mach_msg_send_from_kernel_proper(
 145         mach_msg_header_t       *msg,
 146         mach_msg_size_t         send_size);
 147
 148 #define mach_msg_send_from_kernel mach_msg_send_from_kernel_proper
 149
 150 extern mach_msg_return_t
 151 mach_msg_rpc_from_kernel_proper(
 152         mach_msg_header_t       *msg,
 153         mach_msg_size_t         send_size,
 154         mach_msg_size_t         rcv_size);
 155
 156 #define mach_msg_rpc_from_kernel mach_msg_rpc_from_kernel_proper
 157
 158 extern mach_msg_return_t mach_msg_send_from_kernel_with_options(
 159         mach_msg_header_t       *msg,
 160         mach_msg_size_t         send_size,
 161         mach_msg_option_t       option,
 162         mach_msg_timeout_t      timeout_val);
 163
 164 __END_DECLS
 165
 166 #ifdef  MACH_KERNEL_PRIVATE
 167
 168 extern void mach_msg_receive_continue(void);
 169
 170 /* Initialize kernel server dispatch table */
 171 extern void             mig_init(void) __attribute__((section("__TEXT, initcode")));
 172
 173 /*
 174  * Kernel implementation of the MIG object base class
 175  *
 176  * Conforms to the MIGObjectInterface defined in <mach/mig.h>
 177  * Ports are automatically allocated for the duration of outstanding
 178  * cross-task references and then released.
 179  */
 180
 181 typedef struct mig_object {
 182                         const IMIGObjectVtbl    *pVtbl; /* our interface def */
 183                         mach_port_t             port;    /* our port pointer  */
 184 } mig_object_data_t;
 185
 186
 187 /*
 188  * MIG notify base class definition
 189  * These are chained off the mig object to which the are registered.
 190  * When that object triggers a notification delivery, we walk this
 191  * chain and deliver the appropriate notification.
 192  */
 193 typedef struct mig_notify_object {
 194                         const IMIGNotifyObjectVtbl *pVtbl; /* our interface def */
 195                         mach_port_t             port;    /* our port pointer  */
 196 } mig_notify_object_data_t;
 197
 198 extern kern_return_t mig_object_init(
 199                         mig_object_t            mig_object,
 200                         const IMIGObject        *interface);
 201
 202 extern void mig_object_destroy(
 203                         mig_object_t            mig_object);
 204
 205 extern void mig_object_reference(
 206                         mig_object_t            mig_object);
 207
 208 extern void mig_object_deallocate(
 209                         mig_object_t            mig_object);
 210
 211 extern ipc_port_t convert_mig_object_to_port(
 212                         mig_object_t            mig_object);
 213
 214 extern mig_object_t convert_port_to_mig_object(
 215                         ipc_port_t              port,
 216                         const MIGIID            *iid);
 217
 218 boolean_t mig_object_no_senders(
 219                         ipc_port_t              port,
 220                         mach_port_mscount_t     mscount);
 221
 222 #endif  /* MACH_KERNEL_PRIVATE */
 223
 224 #endif  /* _KERN_IPC_MIG_H_ */