2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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36 * @(#)nfsmount.h 8.3 (Berkeley) 3/30/95
40 #ifndef _NFSCLIENT_NFSMOUNT_H_
41 #define _NFSCLIENT_NFSMOUNT_H_
45 * One allocated on every NFS mount.
46 * Holds NFS specific information for mount.
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_V3FHMAX]; /* File handle of root dir */
54 int nm_fhsize; /* Size of root file handle */
55 struct socket *nm_so; /* Rpc socket */
56 struct ucred *nm_cred; /* Cached mount-time credential */
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 */
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 */
87 * Convert mount ptr to nfsmount ptr.
89 #define VFSTONFS(mp) ((struct nfsmount *)((mp)->mnt_data))