bsd/nfs/nfsrvcache.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  26 /*
  27  * Copyright (c) 1989, 1993
  28  *      The Regents of the University of California.  All rights reserved.
  29  *
  30  * This code is derived from software contributed to Berkeley by
  31  * Rick Macklem at The University of Guelph.
  32  *
  33  * Redistribution and use in source and binary forms, with or without
  34  * modification, are permitted provided that the following conditions
  35  * are met:
  36  * 1. Redistributions of source code must retain the above copyright
  37  *    notice, this list of conditions and the following disclaimer.
  38  * 2. Redistributions in binary form must reproduce the above copyright
  39  *    notice, this list of conditions and the following disclaimer in the
  40  *    documentation and/or other materials provided with the distribution.
  41  * 3. All advertising materials mentioning features or use of this software
  42  *    must display the following acknowledgement:
  43  *      This product includes software developed by the University of
  44  *      California, Berkeley and its contributors.
  45  * 4. Neither the name of the University nor the names of its contributors
  46  *    may be used to endorse or promote products derived from this software
  47  *    without specific prior written permission.
  48  *
  49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  59  * SUCH DAMAGE.
  60  *
  61  *      @(#)nfsrvcache.h        8.3 (Berkeley) 3/30/95
  62  * FreeBSD-Id: nfsrvcache.h,v 1.9 1997/06/03 17:22:47 dfr Exp $
  63  */
  64
  65
  66 #ifndef _NFS_NFSRVCACHE_H_
  67 #define _NFS_NFSRVCACHE_H_
  68
  69 #include <sys/appleapiopts.h>
  70
  71 #ifdef __APPLE_API_PRIVATE
  72 /*
  73  * Definitions for the server recent request cache
  74  */
  75
  76 #define NFSRVCACHESIZ   64
  77
  78 struct nfsrvcache {
  79         TAILQ_ENTRY(nfsrvcache) rc_lru;         /* LRU chain */
  80         LIST_ENTRY(nfsrvcache) rc_hash;         /* Hash chain */
  81         u_long  rc_xid;                         /* rpc id number */
  82         union {
  83                 struct mbuf *ru_repmb;          /* Reply mbuf list OR */
  84                 int ru_repstat;                 /* Reply status */
  85         } rc_un;
  86         union nethostaddr rc_haddr;             /* Host address */
  87         u_int32_t rc_proc;                      /* rpc proc number */
  88         u_char  rc_state;               /* Current state of request */
  89         u_char  rc_flag;                /* Flag bits */
  90 };
  91
  92 #define rc_reply        rc_un.ru_repmb
  93 #define rc_status       rc_un.ru_repstat
  94 #define rc_inetaddr     rc_haddr.had_inetaddr
  95 #define rc_nam          rc_haddr.had_nam
  96
  97 /* Cache entry states */
  98 #define RC_UNUSED       0
  99 #define RC_INPROG       1
 100 #define RC_DONE         2
 101
 102 /* Return values */
 103 #define RC_DROPIT       0
 104 #define RC_REPLY        1
 105 #define RC_DOIT         2
 106 #define RC_CHECKIT      3
 107
 108 /* Flag bits */
 109 #define RC_LOCKED       0x01
 110 #define RC_WANTED       0x02
 111 #define RC_REPSTATUS    0x04
 112 #define RC_REPMBUF      0x08
 113 #define RC_NQNFS        0x10
 114 #define RC_INETADDR     0x20
 115 #define RC_NAM          0x40
 116
 117 #endif /* __APPLE_API_PRIVATE */
 118 #endif /* _NFS_NFSRVCACHE_H_ */