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 * 4. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 *	@(#)nfsdiskless.h	8.2 (Berkeley) 3/30/95
33 * $FreeBSD$
34 */
35
36#ifndef _NFSCLIENT_NFSDISKLESS_H_
37#define _NFSCLIENT_NFSDISKLESS_H_
38
39/*
40 * Structure that must be initialized for a diskless nfs client.
41 * This structure is used by nfs_mountroot() to set up the root vnode,
42 * and to do a partial ifconfig(8) and route(8) so that the critical net
43 * interface can communicate with the server.
44 * The primary bootstrap is expected to fill in the appropriate fields before
45 * starting the kernel.
46 * Currently only works for AF_INET protocols.
47 * NB: All fields are stored in net byte order to avoid hassles with
48 * client/server byte ordering differences.
49 */
50
51/*
52 * I have defined a new structure that can handle an NFS Version 3 file handle
53 * but the kernel still expects the old Version 2 one to be provided. The
54 * changes required in nfs_vfsops.c for using the new are documented there in
55 * comments. (I felt that breaking network booting code by changing this
56 * structure would not be prudent at this time, since almost all servers are
57 * still Version 2 anyhow.)
58 */
59struct nfsv3_diskless {
60	struct ifaliasreq myif;			/* Default interface */
61	struct sockaddr_in mygateway;		/* Default gateway */
62	struct nfs_args	root_args;		/* Mount args for root fs */
63	int		root_fhsize;		/* Size of root file handle */
64	u_char		root_fh[NFSX_V3FHMAX];	/* File handle of root dir */
65	struct sockaddr_in root_saddr;		/* Address of root server */
66	char		root_hostnam[MNAMELEN];	/* Host name for mount pt */
67	long		root_time;		/* Timestamp of root fs */
68	char		my_hostnam[MAXHOSTNAMELEN]; /* Client host name */
69};
70
71/*
72 * Old arguments to mount NFS
73 */
74struct onfs_args {
75	struct sockaddr	*addr;		/* file server address */
76	int		addrlen;	/* length of address */
77	int		sotype;		/* Socket type */
78	int		proto;		/* and Protocol */
79	u_char		*fh;		/* File handle to be mounted */
80	int		fhsize;		/* Size, in bytes, of fh */
81	int		flags;		/* flags */
82	int		wsize;		/* write size in bytes */
83	int		rsize;		/* read size in bytes */
84	int		readdirsize;	/* readdir size in bytes */
85	int		timeo;		/* initial timeout in .1 secs */
86	int		retrans;	/* times to retry send */
87	int		maxgrouplist;	/* Max. size of group list */
88	int		readahead;	/* # of blocks to readahead */
89	int		leaseterm;	/* Term (sec) of lease */
90	int		deadthresh;	/* Retrans threshold */
91	char		*hostname;	/* server's name */
92};
93
94struct nfs_diskless {
95	struct ifaliasreq myif;			/* Default interface */
96	struct sockaddr_in mygateway;		/* Default gateway */
97	struct onfs_args root_args;		/* Mount args for root fs */
98	u_char		root_fh[NFSX_V2FH];	/* File handle of root dir */
99	struct sockaddr_in root_saddr;		/* Address of root server */
100	char		root_hostnam[MNAMELEN];	/* Host name for mount pt */
101	long		root_time;		/* Timestamp of root fs */
102	char		my_hostnam[MAXHOSTNAMELEN]; /* Client host name */
103};
104
105#ifdef _KERNEL
106extern struct nfsv3_diskless nfsv3_diskless;
107extern struct nfs_diskless nfs_diskless;
108extern int	nfs_diskless_valid;
109void bootpc_init(void);
110void nfs_setup_diskless(void);
111void nfs_parse_options(const char *, struct nfs_args *);
112#endif
113
114#endif
115