1/* $OpenBSD: nfsmount.h,v 1.28 2018/04/09 09:39:53 mpi Exp $ */
2/* $NetBSD: nfsmount.h,v 1.10 1996/02/18 11:54:03 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 * @(#)nfsmount.h 8.3 (Berkeley) 3/30/95
36 */
37
38
39#ifndef _NFS_NFSMOUNT_H_
40#define _NFS_NFSMOUNT_H_
41
42/*
43 * Mount structure.
44 * One allocated on every NFS mount.
45 * Holds NFS specific information for mount.
46 */
47struct nfsmount {
48 RBT_HEAD(nfs_nodetree, nfsnode)
49 nm_ntree; /* filehandle/node tree */
50 TAILQ_HEAD(reqs, nfsreq)
51 nm_reqsq; /* request queue for this mount. */
52 struct timeout nm_rtimeout; /* timeout (scans/resends nm_reqsq). */
53 struct mount *nm_mountp; /* Vfs structure for this filesystem */
54 struct vnode *nm_vnode; /* vnode of root dir */
55 int nm_flag; /* Flags for soft/hard... */
56 int nm_numgrps; /* Max. size of groupslist */
57 struct socket *nm_so; /* Rpc socket */
58 int nm_sotype; /* Type of socket */
59 int nm_soproto; /* and protocol */
60 int nm_soflags; /* pr_flags for socket protocol */
61 struct mbuf *nm_nam; /* Addr of server */
62 int nm_timeo; /* Init timer for NFSMNT_DUMBTIMR */
63 int nm_retry; /* Max retries */
64 int nm_srtt[NFS_MAX_TIMER]; /* RTT Timers for RPCs */
65 int nm_sdrtt[NFS_MAX_TIMER];
66 int nm_sent; /* Request send count */
67 int nm_cwnd; /* Request send window */
68 int nm_timeouts; /* Request timeouts */
69 int nm_rsize; /* Max size of read rpc */
70 int nm_wsize; /* Max size of write rpc */
71 int nm_readdirsize; /* Size of a readdir rpc */
72 int nm_readahead; /* Num. of blocks to readahead */
73 u_char nm_verf[NFSX_V3WRITEVERF]; /* V3 write verifier */
74 u_short nm_acregmin; /* Attr cache file recently modified */
75 u_short nm_acregmax; /* ac file not recently modified */
76 u_short nm_acdirmin; /* ac for dir recently modified */
77 u_short nm_acdirmax; /* ac for dir not recently modified */
78};
79
80#ifdef _KERNEL
81
82/* Convert mount ptr to nfsmount ptr: */
83#define VFSTONFS(mp) ((struct nfsmount *)((mp)->mnt_data))
84
85/* Prototypes for NFS mount operations: */
86int nfs_mount(struct mount *, const char *, void *, struct nameidata *,
87 struct proc *);
88int nfs_fsinfo(struct nfsmount *, struct vnode *, struct ucred *,
89 struct proc *);
90void nfs_init(void);
91
92#endif /* _KERNEL */
93
94#endif