1/*	$NetBSD: nfs_bootstatic.c,v 1.7 2008/11/19 18:36:09 ad Exp $	*/
2
3/*
4 *
5 * Copyright (c) 2004 Christian Limpach.
6 * All rights reserved.
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 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29
30#include <sys/cdefs.h>
31__KERNEL_RCSID(0, "$NetBSD: nfs_bootstatic.c,v 1.7 2008/11/19 18:36:09 ad Exp $");
32
33#ifdef _KERNEL_OPT
34#include "opt_nfs_boot.h"
35#endif
36
37#include <sys/param.h>
38#include <sys/systm.h>
39#include <sys/kernel.h>
40#include <sys/ioctl.h>
41#include <sys/proc.h>
42#include <sys/mount.h>
43#include <sys/mbuf.h>
44#include <sys/socket.h>
45#include <sys/socketvar.h>
46
47#include <net/if.h>
48#include <net/if_types.h>
49#include <net/if_media.h>
50#include <net/route.h>
51#include <net/if_ether.h>
52
53#include <netinet/in.h>
54#include <netinet/if_inarp.h>
55
56#include <nfs/rpcv2.h>
57
58#include <nfs/nfsproto.h>
59#include <nfs/nfs.h>
60#include <nfs/nfsmount.h>
61#include <nfs/nfsdiskless.h>
62
63int (*nfs_bootstatic_callback)(struct nfs_diskless *) = NULL;
64
65int
66nfs_bootstatic(struct nfs_diskless *nd, struct lwp *lwp, int *_flags)
67{
68	struct ifnet *ifp = nd->nd_ifp;
69	struct sockaddr_in *sin;
70	int error, flags;
71
72	if (nfs_bootstatic_callback)
73		flags = (*nfs_bootstatic_callback)(nd);
74	else
75		flags = 0;
76
77	if (flags & NFS_BOOT_NOSTATIC)
78		return EOPNOTSUPP;
79
80	if (flags == 0) {
81#ifdef NFS_BOOTSTATIC_MYIP
82		if (!(*_flags & NFS_BOOT_HAS_MYIP)) {
83			nd->nd_myip.s_addr = inet_addr(NFS_BOOTSTATIC_MYIP);
84			flags |= NFS_BOOT_HAS_MYIP;
85		}
86#endif
87#ifdef NFS_BOOTSTATIC_GWIP
88		if (!(*_flags & NFS_BOOT_HAS_GWIP)) {
89			nd->nd_gwip.s_addr = inet_addr(NFS_BOOTSTATIC_GWIP);
90			flags |= NFS_BOOT_HAS_GWIP;
91		}
92#endif
93#ifdef NFS_BOOTSTATIC_MASK
94		if (!(*_flags & NFS_BOOT_HAS_MASK)) {
95			nd->nd_mask.s_addr = inet_addr(NFS_BOOTSTATIC_MASK);
96			flags |= NFS_BOOT_HAS_MASK;
97		}
98#endif
99#ifdef NFS_BOOTSTATIC_SERVADDR
100		if (!(*_flags & NFS_BOOT_HAS_SERVADDR)) {
101			sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr;
102			memset((void *)sin, 0, sizeof(*sin));
103			sin->sin_len = sizeof(*sin);
104			sin->sin_family = AF_INET;
105			sin->sin_addr.s_addr = inet_addr(NFS_BOOTSTATIC_SERVADDR);
106			flags |= NFS_BOOT_HAS_SERVADDR;
107		}
108#endif
109#ifdef NFS_BOOTSTATIC_SERVER
110		if (!(*_flags & NFS_BOOT_HAS_SERVER)) {
111			strncpy(nd->nd_root.ndm_host, NFS_BOOTSTATIC_SERVER,
112				MNAMELEN);
113			flags |= NFS_BOOT_HAS_SERVER;
114			if (strchr(nd->nd_root.ndm_host, ':') != NULL)
115				flags |= NFS_BOOT_HAS_ROOTPATH;
116		}
117#endif
118	}
119
120	*_flags |= flags;
121
122	if (!(*_flags & NFS_BOOT_HAS_SERVADDR) && (*_flags & NFS_BOOT_HAS_SERVER)) {
123		char rootserver[MNAMELEN];
124		char *sep;
125
126		sep = strchr(nd->nd_root.ndm_host, ':');
127		strlcpy(rootserver, nd->nd_root.ndm_host,
128			sep - nd->nd_root.ndm_host+1);
129
130		sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr;
131		memset((void *)sin, 0, sizeof(*sin));
132		sin->sin_len = sizeof(*sin);
133		sin->sin_family = AF_INET;
134		sin->sin_addr.s_addr = inet_addr(rootserver);
135		flags |= NFS_BOOT_HAS_SERVADDR;
136		*_flags |= NFS_BOOT_HAS_SERVADDR;
137	}
138
139	if (flags & NFS_BOOT_HAS_MYIP)
140		aprint_normal("nfs_boot: client_addr=%s\n",
141		    inet_ntoa(nd->nd_myip));
142
143	if (flags & NFS_BOOT_HAS_GWIP)
144		aprint_normal("nfs_boot: gateway=%s\n",
145		    inet_ntoa(nd->nd_gwip));
146
147	if (flags & NFS_BOOT_HAS_MASK)
148		aprint_normal("nfs_boot: netmask=%s\n",
149		    inet_ntoa(nd->nd_mask));
150
151	if (flags & NFS_BOOT_HAS_SERVADDR) {
152		sin = (struct sockaddr_in *) &nd->nd_root.ndm_saddr;
153		aprint_normal("nfs_boot: server=%s\n",
154		    inet_ntoa(sin->sin_addr));
155	}
156
157	if (flags & NFS_BOOT_HAS_SERVER)
158		aprint_normal("nfs_boot: root=%.*s\n", MNAMELEN,
159		    nd->nd_root.ndm_host);
160
161	/*
162	 * Do enough of ifconfig(8) so that the chosen interface
163	 * can talk to the servers.
164	 */
165	error = nfs_boot_setaddress(ifp, lwp,
166	    *_flags & NFS_BOOT_HAS_MYIP ? nd->nd_myip.s_addr : INADDR_ANY,
167	    *_flags & NFS_BOOT_HAS_MASK ? nd->nd_mask.s_addr : INADDR_ANY,
168	    INADDR_ANY);
169	if (error) {
170		aprint_error("nfs_boot: set ifaddr, error=%d\n", error);
171		goto out;
172	}
173
174	if ((*_flags & NFS_BOOT_ALLINFO) != NFS_BOOT_ALLINFO)
175		return EADDRNOTAVAIL;
176
177	error = 0;
178
179 out:
180
181	return error;
182}
183