1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Rick Macklem at The University of Guelph.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#ifndef _NFSCLIENT_NFSDISKLESS_H_
36#define _NFSCLIENT_NFSDISKLESS_H_
37
38/*
39 * Structure that must be initialized for a diskless nfs client.
40 * This structure is used by nfs_mountroot() to set up the root vnode,
41 * and to do a partial ifconfig(8) and route(8) so that the critical net
42 * interface can communicate with the server.
43 * The primary bootstrap is expected to fill in the appropriate fields before
44 * starting the kernel.
45 * Currently only works for AF_INET protocols.
46 * NB: All fields are stored in net byte order to avoid hassles with
47 * client/server byte ordering differences.
48 */
49
50/*
51 * I have defined a new structure that can handle an NFS Version 3 file handle
52 * but the kernel still expects the old Version 2 one to be provided. The
53 * changes required in nfs_vfsops.c for using the new are documented there in
54 * comments. (I felt that breaking network booting code by changing this
55 * structure would not be prudent at this time, since almost all servers are
56 * still Version 2 anyhow.)
57 */
58struct nfsv3_diskless {
59 struct ifaliasreq myif; /* Default interface */
60 struct sockaddr_in mygateway; /* Default gateway */
61 struct nfs_args root_args; /* Mount args for root fs */
62 int root_fhsize; /* Size of root file handle */
63 u_char root_fh[NFSX_V3FHMAX]; /* File handle of root dir */
64 struct sockaddr_in root_saddr; /* Address of root server */
65 char root_hostnam[MNAMELEN]; /* Host name for mount pt */
66 long root_time; /* Timestamp of root fs */
67 char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */
68};
69
70/*
71 * Old arguments to mount NFS
72 */
73struct onfs_args {
74 struct sockaddr *addr; /* file server address */
75 int addrlen; /* length of address */
76 int sotype; /* Socket type */
77 int proto; /* and Protocol */
78 u_char *fh; /* File handle to be mounted */
79 int fhsize; /* Size, in bytes, of fh */
80 int flags; /* flags */
81 int wsize; /* write size in bytes */
82 int rsize; /* read size in bytes */
83 int readdirsize; /* readdir size in bytes */
84 int timeo; /* initial timeout in .1 secs */
85 int retrans; /* times to retry send */
86 int maxgrouplist; /* Max. size of group list */
87 int readahead; /* # of blocks to readahead */
88 int leaseterm; /* Term (sec) of lease */
89 int deadthresh; /* Retrans threshold */
90 char *hostname; /* server's name */
91};
92
93struct nfs_diskless {
94 struct ifaliasreq myif; /* Default interface */
95 struct sockaddr_in mygateway; /* Default gateway */
96 struct onfs_args root_args; /* Mount args for root fs */
97 u_char root_fh[NFSX_V2FH]; /* File handle of root dir */
98 struct sockaddr_in root_saddr; /* Address of root server */
99 char root_hostnam[MNAMELEN]; /* Host name for mount pt */
100 long root_time; /* Timestamp of root fs */
101 char my_hostnam[MAXHOSTNAMELEN]; /* Client host name */
102};
103
104#ifdef _KERNEL
105extern struct nfsv3_diskless nfsv3_diskless;
106extern struct nfs_diskless nfs_diskless;
107extern int nfs_diskless_valid;
108void bootpc_init(void);
109void nfs_setup_diskless(void);
110void nfs_parse_options(const char *, struct nfs_args *);
111#endif
112
113#endif