bsd/sys/ev.h

   1 /*
   2  * Copyright (c) 2000-2007 Apple 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 /* Copyright (c) 1998 Apple Computer, Inc. All rights reserved */
  29
  30 #ifndef _SYS_EV_H_
  31 #define _SYS_EV_H_
  32
  33
  34 #include <sys/appleapiopts.h>
  35
  36 #include <sys/queue.h>
  37 #include <sys/cdefs.h>
  38
  39 struct eventreq {
  40   int      er_type;
  41 #define EV_FD 1    // file descriptor
  42   int      er_handle;
  43   void    *er_data;
  44   int      er_rcnt;
  45   int      er_wcnt;
  46   int      er_ecnt;
  47   int      er_eventbits;
  48 #define EV_RE  1
  49 #define EV_WR  2
  50 #define EV_EX  4
  51 #define EV_RM  8
  52 #define EV_MASK 0xf
  53 };
  54
  55 typedef struct eventreq *er_t;
  56
  57 #define EV_RBYTES 0x100
  58 #define EV_WBYTES 0x200
  59 #define EV_RWBYTES (EV_RBYTES|EV_WBYTES)
  60 #define EV_RCLOSED 0x400
  61 #define EV_RCONN   0x800
  62 #define EV_WCLOSED 0x1000
  63 #define EV_WCONN   0x2000
  64 #define EV_OOB     0x4000
  65 #define EV_FIN     0x8000
  66 #define EV_RESET   0x10000
  67 #define EV_TIMEOUT 0x20000
  68 #define EV_DMASK   0xffffff00
  69
  70
  71 #ifndef KERNEL
  72
  73 __BEGIN_DECLS
  74 int     modwatch(er_t, int);
  75 int     watchevent(er_t, int);
  76 int     waitevent(er_t, struct timeval *);
  77 __END_DECLS
  78
  79 #endif
  80
  81
  82 #ifdef BSD_KERNEL_PRIVATE
  83
  84
  85
  86 struct eventreq32 {
  87   int      er_type;
  88   int      er_handle;
  89   uint32_t er_data;
  90   int      er_rcnt;
  91   int      er_wcnt;
  92   int      er_ecnt;
  93   int      er_eventbits;
  94 };
  95
  96 struct eventreq64 {
  97   int      er_type;
  98   int      er_handle;
  99   user_addr_t er_data;
 100   int      er_rcnt;
 101   int      er_wcnt;
 102   int      er_ecnt;
 103   int      er_eventbits;
 104 };
 105
 106 struct eventqelt {
 107   TAILQ_ENTRY(eventqelt)  ee_slist;
 108   TAILQ_ENTRY(eventqelt)  ee_plist;
 109   struct eventreq64  ee_req;
 110   struct proc *    ee_proc;
 111   u_int            ee_flags;
 112 #define EV_QUEUED       0x01
 113   u_int            ee_eventmask;
 114 };
 115
 116 int waitevent_close(struct proc *p, struct fileproc *);
 117 #endif /* BSD_KERNEL_PRIVATE */
 118
 119 #endif /* _SYS_EV_H_ */