bsd/sys/kern_event.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 /* Copyright (c) 1998, 1999 Apple Computer, Inc. All Rights Reserved */
  23
  24
  25 #ifndef SYS_KERN_EVENT_H
  26 #define SYS_KERN_EVENT_H
  27
  28 #define SYSPROTO_EVENT 1
  29
  30 #include <sys/ioccom.h>
  31
  32 #define KEVENTS_ON  1
  33 #define KEV_SNDSPACE (4 * 1024)
  34 #define KEV_RECVSPACE (8 * 1024)
  35
  36 #define KEV_ANY_VENDOR    0
  37 #define KEV_ANY_CLASS     0
  38 #define KEV_ANY_SUBCLASS  0
  39
  40 /*
  41  * Vendor Code
  42  */
  43
  44 #define KEV_VENDOR_APPLE        1
  45
  46
  47 /*
  48  * Definition of top-level classifications
  49  */
  50
  51 #define KEV_NETWORK_CLASS 1
  52 #define KEV_IOKIT_CLASS   2
  53
  54
  55 struct kern_event_msg {
  56      u_long            total_size;      /* Size of entire event msg */
  57      u_long            vendor_code;     /* For non-Apple extensibility */
  58      u_long            kev_class;       /* Layer of event source */
  59      u_long            kev_subclass;    /* Component within layer    */
  60      u_long            id;              /* Monotonically increasing value  */
  61      u_long            event_code;      /* unique code */
  62      u_long            event_data[1];   /* One or more data longwords      */
  63
  64 };
  65
  66 #define KEV_MSG_HEADER_SIZE   (6 * sizeof(u_long))
  67
  68
  69 struct kev_request {
  70      u_long     vendor_code;
  71      u_long     kev_class;
  72      u_long     kev_subclass;
  73 };
  74
  75 #define SIOCGKEVID      _IOR('e', 1, u_long)
  76 #define SIOCSKEVFILT    _IOW('e', 2, struct kev_request)
  77 #define SIOCGKEVFILT    _IOR('e', 3, struct kev_request)
  78
  79 #ifdef KERNEL
  80
  81 #define N_KEV_VECTORS     5
  82
  83 struct kev_d_vectors {
  84
  85      u_long     data_length;    /* Length of the event data */
  86      void       *data_ptr;    /* Pointer to event data */
  87 };
  88
  89
  90 struct kev_msg {
  91      u_long            vendor_code;     /* For non-Apple extensibility */
  92      u_long            kev_class;       /* Layer of event source */
  93      u_long            kev_subclass;    /* Component within layer    */
  94      u_long            event_code;      /* The event code        */
  95      struct kev_d_vectors  dv[N_KEV_VECTORS];      /* Up to n data vectors  */
  96 };
  97
  98
  99
 100 LIST_HEAD(kern_event_head, kern_event_pcb);
 101
 102 struct  kern_event_pcb {
 103      LIST_ENTRY(kern_event_pcb) ev_link;     /* glue on list of all PCBs */
 104      struct  socket *ev_socket;     /* pointer back to socket */
 105      u_long         vendor_code_filter;
 106      u_long         class_filter;
 107      u_long         subclass_filter;
 108 };
 109
 110 #define sotoevpcb(so)   ((struct kern_event_pcb *)((so)->so_pcb))
 111
 112
 113 int  kev_post_msg(struct kev_msg *event);
 114
 115 #endif
 116
 117 #endif