nfsmount.h revision 122698 
1/*
2 * Copyright (c) 1989, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 *	@(#)nfsmount.h	8.3 (Berkeley) 3/30/95
37 * $FreeBSD: head/sys/nfsclient/nfsmount.h 122698 2003-11-14 20:54:10Z alfred $
38 */
39
40#ifndef _NFSCLIENT_NFSMOUNT_H_
41#define _NFSCLIENT_NFSMOUNT_H_
42
43/*
44 * Mount structure.
45 * One allocated on every NFS mount.
46 * Holds NFS specific information for mount.
47 */
48struct	nfsmount {
49	int	nm_flag;		/* Flags for soft/hard... */
50	int	nm_state;		/* Internal state flags */
51	struct	mount *nm_mountp;	/* Vfs structure for this filesystem */
52	int	nm_numgrps;		/* Max. size of groupslist */
53	u_char	nm_fh[NFSX_V4FH];	/* File handle of root dir */
54	int	nm_fhsize;		/* Size of root file handle */
55	struct	rpcclnt nm_rpcclnt;	/* rpc state */
56	struct	socket *nm_so;		/* Rpc socket */
57	int	nm_sotype;		/* Type of socket */
58	int	nm_soproto;		/* and protocol */
59	int	nm_soflags;		/* pr_flags for socket protocol */
60	struct	sockaddr *nm_nam;	/* Addr of server */
61	int	nm_timeo;		/* Init timer for NFSMNT_DUMBTIMR */
62	int	nm_retry;		/* Max retries */
63	int	nm_srtt[4];		/* Timers for rpcs */
64	int	nm_sdrtt[4];
65	int	nm_sent;		/* Request send count */
66	int	nm_cwnd;		/* Request send window */
67	int	nm_timeouts;		/* Request timeouts */
68	int	nm_deadthresh;		/* Threshold of timeouts-->dead server*/
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	int	nm_acdirmin;		/* Directory attr cache min lifetime */
74	int	nm_acdirmax;		/* Directory attr cache max lifetime */
75	int	nm_acregmin;		/* Reg file attr cache min lifetime */
76	int	nm_acregmax;		/* Reg file attr cache max lifetime */
77	u_char	nm_verf[NFSX_V3WRITEVERF]; /* V3 write verifier */
78	TAILQ_HEAD(, buf) nm_bufq;	/* async io buffer queue */
79	short	nm_bufqlen;		/* number of buffers in queue */
80	short	nm_bufqwant;		/* process wants to add to the queue */
81	int	nm_bufqiods;		/* number of iods processing queue */
82	u_int64_t nm_maxfilesize;	/* maximum file size */
83
84	/* NFSv4 */
85	uint64_t nm_clientid;
86	fsid_t	nm_fsid;
87	u_int	nm_lease_time;
88	time_t	nm_last_renewal;
89};
90
91#if defined(_KERNEL)
92/*
93 * Convert mount ptr to nfsmount ptr.
94 */
95#define VFSTONFS(mp)	((struct nfsmount *)((mp)->mnt_data))
96
97#endif
98
99#endif
100