1/*
2 * Copyright (c) 2000-2010 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) 1995 NeXT Computer, Inc. All Rights Reserved */
29/*
30 * Copyright (c) 1989, 1993
31 * The Regents of the University of California. All rights reserved.
32 *
33 * This code is derived from software contributed to Berkeley by
34 * Rick Macklem at The University of Guelph.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. All advertising materials mentioning features or use of this software
45 * must display the following acknowledgement:
46 * This product includes software developed by the University of
47 * California, Berkeley and its contributors.
48 * 4. Neither the name of the University nor the names of its contributors
49 * may be used to endorse or promote products derived from this software
50 * without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
62 * SUCH DAMAGE.
63 *
64 * @(#)nfsrvcache.h 8.3 (Berkeley) 3/30/95
65 * FreeBSD-Id: nfsrvcache.h,v 1.9 1997/06/03 17:22:47 dfr Exp $
66 */
67
68
69#ifndef _NFS_NFSRVCACHE_H_
70#define _NFS_NFSRVCACHE_H_
71
72#include <sys/appleapiopts.h>
73
74#ifdef __APPLE_API_PRIVATE
75/*
76 * Definitions for the server recent request cache
77 */
78
79/* Network address hash list element */
80union nethostaddr {
81 in_addr_t had_inetaddr;
82 struct in6_addr had_inet6addr;
83 mbuf_t had_nam;
84};
85
86#define NFSRVCACHESIZ 64
87
88struct nfsrvcache {
89 TAILQ_ENTRY(nfsrvcache) rc_lru; /* LRU chain */
90 LIST_ENTRY(nfsrvcache) rc_hash; /* Hash chain */
91 u_int32_t rc_xid; /* rpc id number */
92 union {
93 mbuf_t ru_repmb; /* Reply mbuf list OR */
94 int ru_repstat; /* Reply status */
95 } rc_un;
96 sa_family_t rc_family; /* address family */
97 union nethostaddr rc_haddr; /* Host address */
98 u_int32_t rc_proc; /* rpc proc number */
99 u_char rc_state; /* Current state of request */
100 u_char rc_flag; /* Flag bits */
101};
102
103#define rc_reply rc_un.ru_repmb
104#define rc_status rc_un.ru_repstat
105#define rc_inetaddr rc_haddr.had_inetaddr
106#define rc_inet6addr rc_haddr.had_inet6addr
107#define rc_nam rc_haddr.had_nam
108
109/* Cache entry states */
110#define RC_UNUSED 0
111#define RC_INPROG 1
112#define RC_DONE 2
113
114/* Return values */
115#define RC_DROPIT 0
116#define RC_REPLY 1
117#define RC_DOIT 2
118#define RC_CHECKIT 3
119
120/* Flag bits */
121#define RC_LOCKED 0x01
122#define RC_WANTED 0x02
123#define RC_REPSTATUS 0x04
124#define RC_REPMBUF 0x08
125#define RC_INETADDR 0x20
126#define RC_NAM 0x40
127
128extern lck_grp_t *nfsrv_reqcache_lck_grp;
129extern lck_mtx_t *nfsrv_reqcache_mutex;
130
131#endif /* __APPLE_API_PRIVATE */
132#endif /* _NFS_NFSRVCACHE_H_ */
133