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: src/sys/nfsclient/nfsdiskless.h,v 1.18 2006/12/06 02:15:25 sam Exp $
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 */
59 struct 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 */
74 struct 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
94 struct 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
106 extern struct nfsv3_diskless nfsv3_diskless;
107 extern struct nfs_diskless nfs_diskless;
108 extern int nfs_diskless_valid;
109 void bootpc_init(void);
110 void nfs_setup_diskless(void);
111 void nfs_parse_options(const char *, struct nfs_args *);
112 #endif
113
114 #endif
115
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