nfsdiskless.h revision 1.1.1.3 1 1.1 cgd /*
2 1.1.1.2 fvdl * Copyright (c) 1991, 1993
3 1.1.1.2 fvdl * The Regents of the University of California. All rights reserved.
4 1.1 cgd *
5 1.1 cgd * This code is derived from software contributed to Berkeley by
6 1.1 cgd * Rick Macklem at The University of Guelph.
7 1.1 cgd *
8 1.1 cgd * Redistribution and use in source and binary forms, with or without
9 1.1 cgd * modification, are permitted provided that the following conditions
10 1.1 cgd * are met:
11 1.1 cgd * 1. Redistributions of source code must retain the above copyright
12 1.1 cgd * notice, this list of conditions and the following disclaimer.
13 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright
14 1.1 cgd * notice, this list of conditions and the following disclaimer in the
15 1.1 cgd * documentation and/or other materials provided with the distribution.
16 1.1 cgd * 3. All advertising materials mentioning features or use of this software
17 1.1 cgd * must display the following acknowledgement:
18 1.1 cgd * This product includes software developed by the University of
19 1.1 cgd * California, Berkeley and its contributors.
20 1.1 cgd * 4. Neither the name of the University nor the names of its contributors
21 1.1 cgd * may be used to endorse or promote products derived from this software
22 1.1 cgd * without specific prior written permission.
23 1.1 cgd *
24 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 1.1 cgd * SUCH DAMAGE.
35 1.1 cgd *
36 1.1.1.3 fvdl * @(#)nfsdiskless.h 8.2 (Berkeley) 3/30/95
37 1.1 cgd */
38 1.1 cgd
39 1.1.1.3 fvdl
40 1.1.1.3 fvdl #ifndef _NFS_NFSDISKLESS_H_
41 1.1.1.3 fvdl #define _NFS_NFSDISKLESS_H_
42 1.1.1.3 fvdl
43 1.1 cgd /*
44 1.1 cgd * Structure that must be initialized for a diskless nfs client.
45 1.1 cgd * This structure is used by nfs_mountroot() to set up the root and swap
46 1.1 cgd * vnodes plus do a partial ifconfig(8) and route(8) so that the critical net
47 1.1 cgd * interface can communicate with the server.
48 1.1.1.2 fvdl * The primary bootstrap is expected to fill in the appropriate fields before
49 1.1.1.3 fvdl * starting the kernel. Whether or not the swap area is nfs mounted is
50 1.1.1.3 fvdl * determined by the value in swdevt[0]. (equal to NODEV --> swap over nfs)
51 1.1.1.2 fvdl * Currently only works for AF_INET protocols.
52 1.1.1.2 fvdl * NB: All fields are stored in net byte order to avoid hassles with
53 1.1.1.2 fvdl * client/server byte ordering differences.
54 1.1 cgd */
55 1.1.1.3 fvdl
56 1.1.1.3 fvdl /*
57 1.1.1.3 fvdl * I have defined a new structure that can handle an NFS Version 3 file handle
58 1.1.1.3 fvdl * but the kernel still expects the old Version 2 one to be provided. The
59 1.1.1.3 fvdl * changes required in nfs_vfsops.c for using the new are documented there in
60 1.1.1.3 fvdl * comments. (I felt that breaking network booting code by changing this
61 1.1.1.3 fvdl * structure would not be prudent at this time, since almost all servers are
62 1.1.1.3 fvdl * still Version 2 anyhow.)
63 1.1.1.3 fvdl */
64 1.1.1.3 fvdl struct nfsv3_diskless {
65 1.1.1.3 fvdl struct ifaliasreq myif; /* Default interface */
66 1.1.1.3 fvdl struct sockaddr_in mygateway; /* Default gateway */
67 1.1.1.3 fvdl struct nfs_args swap_args; /* Mount args for swap file */
68 1.1.1.3 fvdl int swap_fhsize; /* Size of file handle */
69 1.1.1.3 fvdl u_char swap_fh[NFSX_V3FHMAX]; /* Swap file's file handle */
70 1.1.1.3 fvdl struct sockaddr_in swap_saddr; /* Address of swap server */
71 1.1.1.3 fvdl char swap_hostnam[MNAMELEN]; /* Host name for mount pt */
72 1.1.1.3 fvdl int swap_nblks; /* Size of server swap file */
73 1.1.1.3 fvdl struct ucred swap_ucred; /* Swap credentials */
74 1.1.1.3 fvdl struct nfs_args root_args; /* Mount args for root fs */
75 1.1.1.3 fvdl int root_fhsize; /* Size of root file handle */
76 1.1.1.3 fvdl u_char root_fh[NFSX_V3FHMAX]; /* File handle of root dir */
77 1.1.1.3 fvdl struct sockaddr_in root_saddr; /* Address of root server */
78 1.1.1.3 fvdl char root_hostnam[MNAMELEN]; /* Host name for mount pt */
79 1.1.1.3 fvdl long root_time; /* Timestamp of root fs */
80 1.1.1.3 fvdl char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */
81 1.1.1.3 fvdl };
82 1.1.1.3 fvdl
83 1.1 cgd struct nfs_diskless {
84 1.1.1.2 fvdl struct ifaliasreq myif; /* Default interface */
85 1.1.1.2 fvdl struct sockaddr_in mygateway; /* Default gateway */
86 1.1.1.2 fvdl struct nfs_args swap_args; /* Mount args for swap file */
87 1.1.1.3 fvdl u_char swap_fh[NFSX_V2FH]; /* Swap file's file handle */
88 1.1.1.2 fvdl struct sockaddr_in swap_saddr; /* Address of swap server */
89 1.1.1.2 fvdl char swap_hostnam[MNAMELEN]; /* Host name for mount pt */
90 1.1.1.2 fvdl int swap_nblks; /* Size of server swap file */
91 1.1.1.2 fvdl struct ucred swap_ucred; /* Swap credentials */
92 1.1.1.2 fvdl struct nfs_args root_args; /* Mount args for root fs */
93 1.1.1.3 fvdl u_char root_fh[NFSX_V2FH]; /* File handle of root dir */
94 1.1.1.2 fvdl struct sockaddr_in root_saddr; /* Address of root server */
95 1.1.1.2 fvdl char root_hostnam[MNAMELEN]; /* Host name for mount pt */
96 1.1.1.2 fvdl long root_time; /* Timestamp of root fs */
97 1.1.1.2 fvdl char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */
98 1.1 cgd };
99 1.1.1.3 fvdl
100 1.1.1.3 fvdl #endif
101