source: rtems/cpukit/libnetworking/nfsclient/nfsdiskless.h @ fbfb60dc

4.104.114.84.9
Last change on this file since fbfb60dc was fbfb60dc, checked in by Ralf Corsepius <ralf.corsepius@…>, on Apr 17, 2005 at 7:29:45 AM

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File size: 4.8 KB
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1/*
2 * Copyright (c) 1991, 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 *      @(#)nfsdiskless.h       8.1 (Berkeley) 6/10/93
37 * $Id$
38 */
39
40#ifndef _NFS_NFSDISKLESS_H_
41#define _NFS_NFSDISKLESS_H_
42
43/*
44 * Structure that must be initialized for a diskless nfs client.
45 * This structure is used by nfs_mountroot() to set up the root and swap
46 * vnodes plus do a partial ifconfig(8) and route(8) so that the critical net
47 * interface can communicate with the server.
48 * The primary bootstrap is expected to fill in the appropriate fields before
49 * starting the kernel. Whether or not the swap area is nfs mounted is determined
50 * by the value in swdevt[0]. (equal to NODEV --> swap over nfs)
51 * Currently only works for AF_INET protocols.
52 * NB: All fields are stored in net byte order to avoid hassles with
53 * client/server byte ordering differences.
54 */
55
56/*
57 * I have defined a new structure that can handle an NFS Version 3 file handle
58 * but the kernel still expects the old Version 2 one to be provided. The
59 * changes required in nfs_vfsops.c for using the new are documented there in
60 * comments. (I felt that breaking network booting code by changing this
61 * structure would not be prudent at this time, since almost all servers are
62 * still Version 2 anyhow.)
63 */
64struct nfsv3_diskless {
65        struct ifaliasreq myif;                 /* Default interface */
66        struct sockaddr_in mygateway;           /* Default gateway */
67        struct nfs_args swap_args;              /* Mount args for swap file */
68        int             swap_fhsize;            /* Size of file handle */
69        u_char          swap_fh[NFSX_V3FHMAX];  /* Swap file's file handle */
70        struct sockaddr_in swap_saddr;          /* Address of swap server */
71        char            swap_hostnam[MNAMELEN]; /* Host name for mount pt */
72        int             swap_nblks;             /* Size of server swap file */
73        struct ucred    swap_ucred;             /* Swap credentials */
74        struct nfs_args root_args;              /* Mount args for root fs */
75        int             root_fhsize;            /* Size of root file handle */
76        u_char          root_fh[NFSX_V3FHMAX];  /* File handle of root dir */
77        struct sockaddr_in root_saddr;          /* Address of root server */
78        char            root_hostnam[MNAMELEN]; /* Host name for mount pt */
79        long            root_time;              /* Timestamp of root fs */
80        char            my_hostnam[MAXHOSTNAMELEN]; /* Client host name */
81};
82
83struct nfs_diskless {
84        struct ifaliasreq myif;                 /* Default interface */
85        struct sockaddr_in mygateway;           /* Default gateway */
86        struct nfs_args swap_args;              /* Mount args for swap file */
87        u_char          swap_fh[NFSX_V2FH];     /* Swap file's file handle */
88        struct sockaddr_in swap_saddr;          /* Address of swap server */
89        char            swap_hostnam[MNAMELEN]; /* Host name for mount pt */
90        int             swap_nblks;             /* Size of server swap file */
91        struct ucred    swap_ucred;             /* Swap credentials */
92        struct nfs_args root_args;              /* Mount args for root fs */
93        u_char          root_fh[NFSX_V2FH];     /* File handle of root dir */
94        struct sockaddr_in root_saddr;          /* Address of root server */
95        char            root_hostnam[MNAMELEN]; /* Host name for mount pt */
96        long            root_time;              /* Timestamp of root fs */
97        char            my_hostnam[MAXHOSTNAMELEN]; /* Client host name */
98};
99
100#endif
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