osfmk/kern/ipc_mig.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  */
  25
  26 #ifndef _IPC_MIG_H_
  27 #define _IPC_MIG_H_
  28
  29 #include <mach/mig.h>
  30 #include <mach/message.h>
  31 #include <sys/kdebug.h>
  32
  33 /*
  34  * Define the trace points for MIG-generated calls.  One traces the input parameters
  35  * to MIG called things, another traces the outputs, and one traces bad message IDs.
  36  */
  37 #ifdef _MIG_TRACE_PARAMETERS_
  38
  39 #define __BeforeRcvCallTrace(msgid,arg1,arg2,arg3,arg4)                               \
  40         KERNEL_DEBUG_CONSTANT(KDBG_MIGCODE(msgid) | DBG_FUNC_START,                   \
  41                               (unsigned int)(arg1),                                   \
  42                               (unsigned int)(arg2),                                   \
  43                               (unsigned int)(arg3),                                   \
  44                               (unsigned int)(arg4),                                   \
  45                               (unsigned int)(0));
  46
  47 #define __AfterRcvCallTrace(msgid,arg1,arg2,arg3,arg4)                                \
  48         KERNEL_DEBUG_CONSTANT(KDBG_MIGCODE(msgid) | DBG_FUNC_END,                     \
  49                               (unsigned int)(arg1),                                   \
  50                               (unsigned int)(arg2),                                   \
  51                               (unsigned int)(arg3),                                   \
  52                               (unsigned int)(arg4),                                   \
  53                               (unsigned int)(0));
  54
  55 #define __BeforeSimpleCallTrace(msgid,arg1,arg2,arg3,arg4)                            \
  56         KERNEL_DEBUG_CONSTANT(KDBG_MIGCODE(msgid) | DBG_FUNC_START,                   \
  57                               (unsigned int)(arg1),                                   \
  58                               (unsigned int)(arg2),                                   \
  59                               (unsigned int)(arg3),                                   \
  60                               (unsigned int)(arg4),                                   \
  61                               (unsigned int)(0));
  62
  63 #define __AfterSimpleCallTrace(msgid,arg1,arg2,arg3,arg4)                             \
  64         KERNEL_DEBUG_CONSTANT(KDBG_MIGCODE(msgid) | DBG_FUNC_END,                     \
  65                               (unsigned int)(arg1),                                   \
  66                               (unsigned int)(arg2),                                   \
  67                               (unsigned int)(arg3),                                   \
  68                               (unsigned int)(arg4),                                   \
  69                               (unsigned int)(0));
  70
  71 #else /* !_MIG_TRACE_PARAMETERS_ */
  72
  73 #define __BeforeRcvRpc(msgid, _NAME_)                                                 \
  74         KERNEL_DEBUG_CONSTANT(KDBG_MIGCODE(msgid) | DBG_FUNC_START,                   \
  75                               (unsigned int)(0),                                      \
  76                               (unsigned int)(0),                                      \
  77                               (unsigned int)(0),                                      \
  78                               (unsigned int)(0),                                      \
  79                               (unsigned int)(0));
  80
  81 #define __AfterRcvRpc(msgid, _NAME_)                                                  \
  82         KERNEL_DEBUG_CONSTANT(KDBG_MIGCODE(msgid) | DBG_FUNC_END,                     \
  83                               (unsigned int)(0),                                      \
  84                               (unsigned int)(0),                                      \
  85                               (unsigned int)(0),                                      \
  86                               (unsigned int)(0),                                      \
  87                               (unsigned int)(0));
  88
  89
  90 #define __BeforeRcvSimple(msgid, _NAME_)                                              \
  91         KERNEL_DEBUG_CONSTANT(KDBG_MIGCODE(msgid) | DBG_FUNC_START,                   \
  92                               (unsigned int)(0),                                      \
  93                               (unsigned int)(0),                                      \
  94                               (unsigned int)(0),                                      \
  95                               (unsigned int)(0),                                      \
  96                               (unsigned int)(0));
  97
  98 #define __AfterRcvSimple(msgid, _NAME_)                                               \
  99         KERNEL_DEBUG_CONSTANT(KDBG_MIGCODE(msgid) | DBG_FUNC_END,                     \
 100                               (unsigned int)(0),                                      \
 101                               (unsigned int)(0),                                      \
 102                               (unsigned int)(0),                                      \
 103                               (unsigned int)(0),                                      \
 104                               (unsigned int)(0));
 105
 106 #endif /* !_MIG_TRACE_PARAMETERS_ */
 107
 108 #define _MIG_MSGID_INVALID(msgid)                                                     \
 109         KERNEL_DEBUG_CONSTANT(MACHDBG_CODE(DBG_MACH_MSGID_INVALID, (msgid)),          \
 110                               (unsigned int)(0),                                      \
 111                               (unsigned int)(0),                                      \
 112                               (unsigned int)(0),                                      \
 113                               (unsigned int)(0),                                      \
 114                               (unsigned int)(0))
 115
 116 /* Send a message from the kernel */
 117 extern mach_msg_return_t mach_msg_send_from_kernel(
 118         mach_msg_header_t       *msg,
 119         mach_msg_size_t         send_size);
 120
 121
 122 extern mach_msg_return_t mach_msg_rpc_from_kernel(
 123         mach_msg_header_t       *msg,
 124         mach_msg_size_t         send_size,
 125         mach_msg_size_t         rcv_size);
 126
 127 extern void mach_msg_receive_continue(void);
 128
 129 /*
 130  * Kernel implementation of the MIG object base class
 131  *
 132  * Conforms to the MIGObjectInterface defined in <mach/mig.h>
 133  * Ports are automatically allocated for the duration of outstanding
 134  * cross-task references and then released.
 135  */
 136
 137 typedef struct mig_object {
 138                         IMIGObjectVtbl          *pVtbl; /* our interface def */
 139                         mach_port_t             port;    /* our port pointer  */
 140 } mig_object_data_t;
 141
 142
 143 /*
 144  * MIG notify base class definition
 145  * These are chained off the mig object to which the are registered.
 146  * When that object triggers a notification delivery, we walk this
 147  * chain and deliver the appropriate notification.
 148  */
 149 typedef struct mig_notify_object {
 150                         IMIGNotifyObjectVtbl    *pVtbl; /* our interface def */
 151                         mach_port_t             port;    /* our port pointer  */
 152 } mig_notify_object_data_t;
 153
 154
 155 #endif  /* _IPC_MIG_H_ */