/*      $OpenBSD: nfsmount.h,v 1.28 2018/04/09 09:39:53 mpi Exp $       */
/*      $NetBSD: nfsmount.h,v 1.10 1996/02/18 11:54:03 fvdl Exp $       */

/*
 * Copyright (c) 1989, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Rick Macklem at The University of Guelph.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)nfsmount.h  8.3 (Berkeley) 3/30/95
 */


#ifndef _NFS_NFSMOUNT_H_
#define _NFS_NFSMOUNT_H_

/*
 * Mount structure.
 * One allocated on every NFS mount.
 * Holds NFS specific information for mount.
 */
struct  nfsmount {
        RBT_HEAD(nfs_nodetree, nfsnode)
                nm_ntree;               /* filehandle/node tree */
        TAILQ_HEAD(reqs, nfsreq)
                nm_reqsq;               /* request queue for this mount. */
        struct  timeout nm_rtimeout;    /* timeout (scans/resends nm_reqsq). */
        struct  mount *nm_mountp;       /* Vfs structure for this filesystem */
        struct  vnode *nm_vnode;        /* vnode of root dir */
        int     nm_flag;                /* Flags for soft/hard... */
        int     nm_numgrps;             /* Max. size of groupslist */
        struct  socket *nm_so;          /* Rpc socket */
        int     nm_sotype;              /* Type of socket */
        int     nm_soproto;             /* and protocol */
        int     nm_soflags;             /* pr_flags for socket protocol */
        struct  mbuf *nm_nam;           /* Addr of server */
        int     nm_timeo;               /* Init timer for NFSMNT_DUMBTIMR */
        int     nm_retry;               /* Max retries */
        int     nm_srtt[NFS_MAX_TIMER]; /* RTT Timers for RPCs */
        int     nm_sdrtt[NFS_MAX_TIMER];
        int     nm_sent;                /* Request send count */
        int     nm_cwnd;                /* Request send window */
        int     nm_timeouts;            /* Request timeouts */
        int     nm_rsize;               /* Max size of read rpc */
        int     nm_wsize;               /* Max size of write rpc */
        int     nm_readdirsize;         /* Size of a readdir rpc */
        int     nm_readahead;           /* Num. of blocks to readahead */
        u_char  nm_verf[NFSX_V3WRITEVERF]; /* V3 write verifier */
        u_short nm_acregmin;            /* Attr cache file recently modified */
        u_short nm_acregmax;            /* ac file not recently modified */
        u_short nm_acdirmin;            /* ac for dir recently modified */
        u_short nm_acdirmax;            /* ac for dir not recently modified */
};

#ifdef _KERNEL

/* Convert mount ptr to nfsmount ptr: */
#define VFSTONFS(mp)    ((struct nfsmount *)((mp)->mnt_data))

/* Prototypes for NFS mount operations: */
int     nfs_mount(struct mount *, const char *, void *, struct nameidata *,
            struct proc *);
int     nfs_fsinfo(struct nfsmount *, struct vnode *, struct ucred *,
            struct proc *);
void    nfs_init(void);

#endif /* _KERNEL */

#endif