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Annotation of sys/nfs/nfsrvcache.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: nfsrvcache.h,v 1.6 2003/06/02 23:28:20 millert Exp $  */
        !             2: /*     $NetBSD: nfsrvcache.h,v 1.10 1996/02/18 11:54:08 fvdl Exp $     */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1989, 1993
        !             6:  *     The Regents of the University of California.  All rights reserved.
        !             7:  *
        !             8:  * This code is derived from software contributed to Berkeley by
        !             9:  * Rick Macklem at The University of Guelph.
        !            10:  *
        !            11:  * Redistribution and use in source and binary forms, with or without
        !            12:  * modification, are permitted provided that the following conditions
        !            13:  * are met:
        !            14:  * 1. Redistributions of source code must retain the above copyright
        !            15:  *    notice, this list of conditions and the following disclaimer.
        !            16:  * 2. Redistributions in binary form must reproduce the above copyright
        !            17:  *    notice, this list of conditions and the following disclaimer in the
        !            18:  *    documentation and/or other materials provided with the distribution.
        !            19:  * 3. Neither the name of the University nor the names of its contributors
        !            20:  *    may be used to endorse or promote products derived from this software
        !            21:  *    without specific prior written permission.
        !            22:  *
        !            23:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            24:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            25:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            26:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            27:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            28:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            29:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            30:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            31:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            32:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            33:  * SUCH DAMAGE.
        !            34:  *
        !            35:  *     @(#)nfsrvcache.h        8.3 (Berkeley) 3/30/95
        !            36:  */
        !            37:
        !            38:
        !            39: #ifndef _NFS_NFSRVCACHE_H_
        !            40: #define _NFS_NFSRVCACHE_H_
        !            41:
        !            42: /*
        !            43:  * Definitions for the server recent request cache
        !            44:  */
        !            45:
        !            46: #define        NFSRVCACHESIZ   64
        !            47:
        !            48: struct nfsrvcache {
        !            49:        TAILQ_ENTRY(nfsrvcache) rc_lru;         /* LRU chain */
        !            50:        LIST_ENTRY(nfsrvcache) rc_hash;         /* Hash chain */
        !            51:        u_int32_t       rc_xid;                         /* rpc id number */
        !            52:        union {
        !            53:                struct mbuf *ru_repmb;          /* Reply mbuf list OR */
        !            54:                int ru_repstat;                 /* Reply status */
        !            55:        } rc_un;
        !            56:        union nethostaddr rc_haddr;             /* Host address */
        !            57:        u_int16_t rc_proc;                      /* rpc proc number */
        !            58:        u_char    rc_state;             /* Current state of request */
        !            59:        u_char    rc_flag;              /* Flag bits */
        !            60: };
        !            61:
        !            62: #define        rc_reply        rc_un.ru_repmb
        !            63: #define        rc_status       rc_un.ru_repstat
        !            64: #define        rc_inetaddr     rc_haddr.had_inetaddr
        !            65: #define        rc_nam          rc_haddr.had_nam
        !            66:
        !            67: /* Cache entry states */
        !            68: #define        RC_UNUSED       0
        !            69: #define        RC_INPROG       1
        !            70: #define        RC_DONE         2
        !            71:
        !            72: /* Return values */
        !            73: #define        RC_DROPIT       0
        !            74: #define        RC_REPLY        1
        !            75: #define        RC_DOIT         2
        !            76: #define        RC_CHECKIT      3
        !            77:
        !            78: /* Flag bits */
        !            79: #define        RC_LOCKED       0x01
        !            80: #define        RC_WANTED       0x02
        !            81: #define        RC_REPSTATUS    0x04
        !            82: #define        RC_REPMBUF      0x08
        !            83: #define        RC_INETADDR     0x20
        !            84: #define        RC_NAM          0x40
        !            85:
        !            86: #endif