FreeBSD/Linux Kernel Cross Reference
sys/fs/nfs/nfscl.h
1 /*-
2 * Copyright (c) 2009 Rick Macklem, University of Guelph
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: releng/9.0/sys/fs/nfs/nfscl.h 191783 2009-05-04 15:23:58Z rmacklem $
27 */
28
29 #ifndef _NFS_NFSCL_H
30 #define _NFS_NFSCL_H
31
32 /*
33 * Extra stuff for a NFSv4 nfsnode.
34 * MALLOC'd to the correct length for the name and file handle.
35 * n4_data has the file handle, followed by the file name.
36 * The macro NFS4NODENAME() returns a pointer to the start of the
37 * name.
38 */
39 struct nfsv4node {
40 u_int16_t n4_fhlen;
41 u_int16_t n4_namelen;
42 u_int8_t n4_data[1];
43 };
44
45 #define NFS4NODENAME(n) (&((n)->n4_data[(n)->n4_fhlen]))
46
47 /*
48 * Just a macro to convert the nfscl_reqstart arguments.
49 */
50 #define NFSCL_REQSTART(n, p, v) \
51 nfscl_reqstart((n), (p), VFSTONFS((v)->v_mount), \
52 VTONFS(v)->n_fhp->nfh_fh, VTONFS(v)->n_fhp->nfh_len, NULL)
53
54 /*
55 * These two macros convert between a lease duration and renew interval.
56 * For now, just make the renew interval 1/2 the lease duration.
57 * (They should be inverse operators.)
58 */
59 #define NFSCL_RENEW(l) (((l) < 2) ? 1 : ((l) / 2))
60 #define NFSCL_LEASE(r) ((r) * 2)
61
62 /*
63 * These flag bits are used for the argument to nfscl_fillsattr() to
64 * indicate special handling of the attributes.
65 */
66 #define NFSSATTR_FULL 0x1
67 #define NFSSATTR_SIZE0 0x2
68 #define NFSSATTR_SIZENEG1 0x4
69 #define NFSSATTR_SIZERDEV 0x8
70
71 #endif /* _NFS_NFSCL_H */
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